The case to extend the Orange Line to Wyoming Hill

This page wrote about how extending the E Line just a few blocks would have benefits which would compound across the system. It's not the only portion of the T where this would be the case. While long-range extensions of the subway system are probably suboptimal from a cost-benefit analysis (and would be better served by Regional Rail improvements), it's important to think strategically about what improvements could be made. Sky Rose's Red Line conversion of the Mattapan Line is one such idea, the E to Hyde Square another, and the eventual rapid transit conversion of the Needham Line (the topic of a different post) a third.

Here's another. In this case, as in the others mentioned, the extension of the line in question not only improves service for the short extension, but helps build in redundancy and resilience in to the whole line to improve service across the board. Building a new terminal also helps, allowing the T to better manage headways across the line, rather than relying on the current substandard terminal at Oak Grove.

Why run past Oak Grove?

When the new Orange Line routes—built as the Southwest Corridor to Forest Hills in 1987 and Haymarket-North to Oak Grove route in 1975—were first proposed, the current termini were not planned to be the ends of the line. On the south end, the route was proposed to extend south to West Roxbury and then to Dedham (the right-of-way to Dedham has been sold off and developed, so this is no longer feasible), and on the north side, it was proposed to extend along the Western Route (the Haverhill Line) to 128 and Reading.

Neither of these came to fruition. The extension to West Roxbury would require a full-scale conversion of the Needham Line. It can’t be done in sections (with the possible extension of a segment to Roslindale), but would require severing the Needham Line entirely, extending the Green Line from Newton Highlands to Needham, and building the Orange Line out to West Roxbury or Needham. The right-of-way could easily accommodate this, but it would require entirely new stations and at least two new bridges built on existing abutments. It’s a worthy, logical project (especially since it would take some of the pressure off of South Station, reducing the need to build the $5 billion South Station Expansion project) and would dramatically improve service to the area, but it would be relatively expensive and politically difficult.

The northern extension, to Reading, would be harder still. While the Needham Line is grade separated to Needham Junction, the Western Route has more than a dozen grade crossings between Oak Grove and Reading, including several in Melrose starting a mile to the north. It would require trains with pantographs and full crossing rebuilding, or full grade separation, and service levels which would exacerbate congestion in the corridor at the many grade crossings. Extending the Orange Line would require running all commuter and freight rail service across the Wildcat Branch to the Lowell Line, putting more strain on that main line. It would be technically feasible, but practically and financially (and probably politically), it is not about to happen.

The first mile going north is a different story. Oak Grove is not particularly well-sited for a terminal station, which work best when they serve dense nodes of ridership generation. It has park-and-ride lot which is accessible by local streets—but not from any highway—and mostly serves a local population. While there is some good transit-oriented development near the station, beyond that is parkland: to the east is Pine Banks reservation, and to the west, the Middlesex Fells. Much of the ridership at Oak Grove comes from Melrose, a relatively-dense town with a border just north of the station, where many residents have to choose between walking to the infrequent-and-costly Commuter Rail, playing roulette with the bus schedule, or driving to Oak Grove. Many choose the latter, and with the small size of the parking lot, it is frequently full before 8 a.m.

If you calculate a catchment area for Oak Grove based on Census block data, there are about 5000 people who live within half a mile of the station (and don’t also live within half a mile of Malden Center, with the assumption that passengers closer to Malden would walk there rather than Oak Grove). Oak Grove is situated in between Pine Banks park to the east and the Middlesex Fells to the west; while parks are beneficial urban amenities, they do little to attract ridership to the Orange Line. One mile north, however, there are many more people. Instead of Pine Banks and the Fells, there’s a mixture of single-family and multi-family housing and a population density of more than 10,000 per square mile, one of the densest areas in the Boston suburbs. (It's also one of the suburbs which has at least been talking about increasing density near transit stations, which might be one of the most important single goals for the housing-starved region.) So, if you draw the same circle around Wyoming Hill that you did around Oak Grove, 9000 people are within an easy walk.

How a new terminal can improve high-frequency service

In addition, since Oak Grove was never designed to act as a terminal, it doesn’t work particularly well as a terminal. This is similar to the issues this page has previously discussed at Alewife. A Wyoming Hill terminal, especially one built with three tracks, would allow more resilient operations. The Oak Grove terminal is currently dependent on a single crossover to the south of the terminal, and can become congested at peak hours, impacting the rest of the line; providing an extension to Wyoming Hill could provide a terminal with more capacity and a better operational design. Tail tracks extend past the station, but are unused and overgrown before terminating about 3500 feet south of Wyoming Avenue. The right-of-way is wide enough for rapid transit and Commuter Rail service to coexist (it's at least as wide as the right-of-way to the south in Malden) although to extend the Orange Line, the Haverhill track would have to be shifted east (with the potential benefit of eliminating what is now a 45 mph speed restriction on a reverse curve) and the double track switch may have to be relocated, which would have minor impact on operations. (A fully two-track Western Route would require major bridge work and earthwork between Oak Grove and Malden.)

It would also allow the Orange Line to operate with a double set of terminals on the north end, where the line ends with neither a loop nor a yard. There are few rail lines in the US which have three-minute headways and manage to turn trains at a station like Oak Grove (the Orange Line isn't currently programmed for such headways, but if it one day ran from Oak Grove to West Roxbury, it might need them). Three minute headways depend on the ability to minimize dwell times at stations, and the ability to turn trains at the end of the line.

In the US, New York and Chicago have several lines with three minute headways, but few (if any) of these operate these headways to a stub-ended terminal at the end of the line. In New York, except for two lines which terminate in Manhattan (the L and the 7), this is achieved through branching. For instance, the 4 and 5 trains on the Upper East Side in New York run 28 trains per hour (a 2:09 headway) in Manhattan, but the trains originate at three terminals on the north end (Nereid Av, Eastchester/Dyre Av and Woodlawn) and two on the south (Crown Heights and Flatbush, with some additional service from other locations). In other cases, interlined lines do not run all trains to the end of the line, but have some turn back shy of the terminal (the 6, for example) at peak hour. (Alon has written a lot about branching in NYC; it used to have even more.)

The CTA Blue Line schedule showing how many rush-hour trips
begin or end their runs at mid-line terminals to provide more
service on the core of the system.

In Chicago, several single lines (Red, Blue, Brown) run three minute headways (the Blue Line runs 2:40 headways at peak hour) but all terminate at yards, loops, or more-than-two-track terminals (in the case of the Brown Line, where the three-track terminal at Kimball has a capacity of 21 trains per hour). The Blue Line, which is operating 23 trains per hour, doesn't operate all trains to end-of-line terminals, but basically runs two services overlaid at rush hour: O'Hare to UIC-Halsted and Rosemont to Forest Park. If the Orange Line (in Boston) one day ran from West Roxbury (or Needham) to Wyoming Hill, the most frequent service might only run from Oak Grove (or even Wellington, which with its third track is well-suited for a short-turn terminal) to Forest Hills. So at peak hour, there would be a train every six minutes between Oak Grove and Westie/Needham, and every three minutes from Wellington to Forest Hills, but no terminal would have to turn a train more frequently than every six minutes (which wouldn't require a three-track terminal at Wyoming Hill).

Track layout at Wyoming. Commuter Rail tracks shifted east over existing platform. Orange Line shown with a two track
terminal, with an optional third track and second platform shown to the west.

How extending the Orange Line improves service beyond the Orange Line

Beyond benefitting the Orange Line, this plan would improve service for Commuter Rail riders. Today, most Haverhill line trains make all local stops, including three in Melrose. The stretch from Cedar Park to Wyoming Hill is just half a mile, which doesn't give any time to accelerate, so it adds several minutes of travel time. A full-speed trip from Cedar Park to Malden this would result in a faster trip for most commuters on the Haverhill Line. (It's also possible that the two stations could be consolidated with a new station near the high school—with the assumption that many current Cedar Park customers would walk to Wyoming Hill for the more-frequent Orange Line—although this would require further study.)

Having a station a closer walk to many in Melrose would also benefit parking availability at Oak Grove. Consensus is that the Oak Grove lot is full by 7:30 a.m., if not earlier, despite charging $9 per day for parking. Shifting some parkers to walkers by proving a closer Orange Line option would provide more availability at Oak Grove, meaning that some later commuters who today drive to Wellington (or maybe all the way in to the city) would be able to leave their car earlier and get on the train, reducing congestion.

Building this extension wouldn't be perfectly simple, but it could be done within the existing right-of-way and a portion of an existing parking lot at Wyoming Hill. The right-of-way is 80 feet wide, with at least 65 feet usable (given nearby wetlands), wide enough for two 31-foot rights-of-way. Power is already provided from a substation north of Oak Grove, and another would not likely be required since it is only 0.8 miles from the substation to Wyoming Avenue. At Wyoming Hill, some of the parking lot would be eliminated to build a terminal, and reaccommodating this parking would have to be studied. However, no physical buildings would be impacted, and a two-track station would impact only a small portion of the parking lot.

This extension would not be possible today, because the number of cars serving the Orange Line is stretched too thin as it is. With the new fleet in testing and promised to come online later this year or early next, however, this extra service could be provided, without stretching headways and pushing the line further over capacity. (New signals, in the long run, will also help increase capacity.) Beyond Wyoming Avenue, the cost to extend the Orange Line likely exceeds the benefits. But between Oak Grove and Wyoming Hill, the benefits are high for operations, existing riders, new riders, and parallel Commuter Rail riders, and the costs relatively low.

Kudos, MBTA, on a job well done.

It's not particularly frequent that I write (or anyone else writes) a blog post praising the MBTA (although it's probably less frequent than it should be; the agency does a lot of good work with an old system and all-too-often inadequate funding and support) but today that is exactly what I am going to do regarding the Harvard-to-Alewife shuttle.

Some background: in 2016 I wrote a blog post about how the Harvard-Alewife shuttles could be improved. I noticed it mostly because I was on a training run for Boston (two weeks before my brush with death/fame, but I digress) and ran along Alewife Brook Parkway before taking a bus back to Harvard from Alewife. That was also for the floating slab project which has been with us since, well, at least 2011, and it sounds like the infrastructure will require continued maintenance forever, or at least until the MBTA installs a signal system which allows single-track operation (a regular occurrence for maintenance in Chicago and Washington, D.C.).

My advice went unheeded at the time. When the project came up again this fall, we (TransitMatters; if you haven't already, become a TM member or apply for our first ever staff position) went all in. We contacted the T, city officials in Somerville and Cambridge, and wrote about it in Commonwealth. The idea is mostly sound. The pushback from the T—which we heard through intermediaries—was twofold, although any problems seemed easily solved:

• First, they argued that it would adversely affect Alewife-Davis passengers (a valid concern, although I had someone who works with the MBTA looking at how shutdowns affect ridership look at some numbers, and these passengers account for a very small number of overall ridership, as would be expected), which could be mitigated by a single shuttle from Alewife to Davis. 
• Second, that having buses going to multiple destinations would confuse passengers. Less valid, in my opinion. Apparently a train stopping three stops short of is normal terminal isn't confusing, but buses with different destinations is? Or as a friend put it: "people can figure out the difference between Alewife and Braintree, right?"

In any case, on Saturday, December 1, the last day of the floating slab project, I got a message from a TransitMatters member: the T was sending buses out to different termini. Some were going to Davis. Some all the way to Alewife. I had been out of Cambridge, but once home I jumped at the opportunity to Hubway (or BlueBike) over to the Harvard Station to check it out. I wanted to see for myself. I wanted the rumor to be true. Alas, when I got there, the buses were operating "normally."

But I noticed a peculiar difference: rather than being signed for Alewife Sta one of the buses was signed for Alewife Sta via Porter and Davis. If nothing else, this was an improvement in customer information: rather than just the terminal, it showed all of the bypassed stations. By the time I arrived, ridership was relatively low: only about 100 passengers per train, which were handled by two buses, which would be called in to the busway by inspectors as trains arrived. I was somewhat disappointed: I wouldn't get to see the new system in practice, and that it would only live on as a rumor from a busier time of day. Nor would I be able to commend the T on trying something new. Again, just a rumor on the Internet.

So I walked down the ramp towards the pit, when I noticed a stack of papers sitting on the edge of a trash can (it was above the rim, and, no, I didn't eat it). My curiosity piqued, I picked one up and read it. What had I'd stumbled upon?

Operator Guide: Harvard – Alewife

Saturday, December 1: 12 PM to 3 PM

We are testing a new Harvard – Alewife shuttle to use buses more efficiently and to provide a better service to our customers. There are a total of 3 different shuttle routes during this time period. A station official will let you know which route to begin when you are arrive at Harvard or Alewife.

The document went on to describe the three routes in detail, the head signs to use (this described the signage I'd seen earlier) and the fact that it had been observed earlier, but not when I was there. The details are that the T rather ingeniously came up with three routes to provide customers routes without sending all of the buses to Alewife. One route ran express from Harvard to Alewife. A second ran from Harvard to Alewife making all stops. A third ran to Davis Square only. While not as efficient as what I had proposed, it was a good balance of customer service and efficiency. I was very impressed, and I hope the test went well.

The skeptic will say "so why didn't they try this earlier?" I'll cut the T a lot of slack here. Transit agencies are large bureaucracies, and like ocean liners, they take some time to change course. In this case, they not only had to create this document, they had to vet the route, change the buses sign codes, and communicate with the various officials involved. Could it have happened faster? Maybe. Could it have not happened at all? Most certainly: that's the easiest thing to do.

Maintenance shutdowns happen. They're a necessary evil, but they're an opportunity to experiment. ( (* see below for some brief suggestions) Unfortunately, experimentation is often something anathema to organizations like the MBTA. It takes extra effort for an often overworked staff, and even if the potential payoff is high, the willingness to fail is often low. But in this case, the MBTA tried. I would hope that it was successful, and that it will be the basis for better shuttle services for future floating Slab work, and elsewhere on the system going forwards.

So o everyone involved in the planning and operations staff at the MBTA: kudos and thank you. It's always a risk to try something new. And to listen to some guy ranting on the Internet. You did both. I hope it worked. I hope that it will work in the future, and that the T use these sorts of situations to try new things to continue to provide the best possible service to its customers.

* Some suggestions for future experiments …

• When the D Line is shut down from Kenmore to Reservoir, run a local shuttle bus along the route, but encourage through passengers to use the C Line from Cleveland Circle and allow fares (easiest would be to collect no fares west of Reservoir).
• When the Orange Line is shut down past Ruggles, run every bus terminating at Forest Hills through to the start of Orange Line service, reducing the number of bus-shuttle-subway transfers by allowing passengers on buses to Forest Hills a one-seat ride to the Orange Line trains.
• When the Green Line is shut next summer from Newton Highlands to Riverside, run alternating buses to Woodland and Riverside, instead of making every Riverside passenger make the tedious loop in and out of the Woodland station.) 
• If the Lowell Line is shut down on weekends in the future, immediately fire anyone who proposes whatever the bus route used this fall was. Instead run buses from Lowell to Anderson/Woburn and then express to Boston, and serve the rest of the line with the adjacent 134 bus, with a couple of trips added as necessary to supplement service.

The case for extending the E Line to Hyde Square

This post was conceived of and co-written by an author who wishes to remain anonymous (I know who he/she is and fully support the content in the post).

The proposed design for the new MBTA vehicles.

With the news that the MBTA Fiscal Management and Control Board is considering a massive revamp and modernization of the Green Line, including modern rolling stock, comes the necessity to consider the future of the E Branch. Additionally, the MBTA's Focus40 plan for the next 20 years of the MBTA makes several recommendations for the E line, in particular, which we think could be implemented relatively easily and inexpensively, and would allow the T to provide better, more efficient service in the corridor.

However, the E branch, with its street-running segments in heavy traffic and simple loop terminal, poses a problem. Should the FMCB choose to modernize the system and acquire 100-foot-long cars, two-car trains of the new rolling stock will be unable to fit into the existing Heath Street Loop, one of the smallest on the system once the Lechmere Yard is decommissioned with the coming completion of the Green Line Extension project. This would limit the capacity of any trains serving the E Line, including in the Central Subway and the GLX.

In part as a result of the MBTA’s past lack of transparency about the Arborway line, the future of the E Branch is a touchy subject and a source of frustration for many. There are some in Jamaica Plain would obviously like to see the line extended back to the Arborway, but this is unlikely. This is due to the existing reliability issues on the mixed-traffic segment and the unlikelihood of gaining high-quality dedicated right-of-way on Centre Street (where the 39 bus suffers reliability issues) and which has a narrow cross-section which is, in certain points, just 40 feet wide (narrower than any existing streetcar line in the country with the exception of two blocks of the J-Church on 30th Street in San Francisco, where, it's worth point out, it doesn't snow), so a full-scale restoration still seems unlikely. Indeed, the E branch is the first line to be cut when the T runs short of vehicles; recently it has been relatively frequently terminated at Brigham Circle during the evening rush on some days, apparently due to a shortage of operable trolleys (or as the T's Twitter called it: "disabled trains"). The T has been less than transparent about this, raising bad memories of the Arborway Line’s “temporarily suspended” days, which began in 1985 and lasted for decades (unlike the final 1985 shutdown, service has generally been restored in the evening).

Despite the state of the E Branch beyond Brigham Circle, and the challenges facing it in a modernized future, ideas for its improvement continue to pop up. The line is mostly constrained by a short section of street running near Brigham Circle, where the E Line shares right-of-way not only with the congested Huntington Avenue leading from Route 9 to the Longwood Medical area, but also the frequent 39 and 66 buses. Northeastern transportation professor Peter Furth and then-student Charlie Guo put together a proposal to create a dedicated transitway through this section, a corridor—and major bottleneck—identified by CTPS analysis as one where transit riders represent a high percentage of road users at peak hour. Meanwhile, the Go Boston 2030 plan suggests extending the branch, not all the way back to the Arborway, but to Hyde Square in the northern part of JP.

The Furth-Guo proposal on Huntington Ave.

Between the recent rush-hour cutbacks and the challenges that any proposed Green Line modernization would pose to Heath Loop, it is likely that if the E Branch is to survive beyond Brigham Circle, it is in need of a plan for modernization and improvement itself. Such a plan must satisfy several elements. It should:

• Preserve reliability for the entire E service. Unreliablity west of Brigham Circle can cause cascading delays down the line, which will become more problematic as the line is extended to West Medford.
• Be compatible with modern rolling stock
• Adequately serve, or even improve, the needs of current riders on the E Branch and the parallel 39 bus
• Increase overall capacity to meet the needs of the considerable development on the Huntington Avenue corridor

This post seeks to to combine the Furth-Guo proposal with additional dedicated right-of-way on South Huntington Avenue and follow the City of Boston’s proposal to extend the E to Hyde Square. Such an extension would likely involve some rearranging and consolidation of stations, not only in the section between Tremont and Riverway as in the Furth-Guo proposal, but additionally on South Huntington.

This Huntington Transitway would have several beneficial features. It would be designed to serve both trolleys and buses; since the E will likely never be restored beyond Hyde Square, there will always be a necessity for a frequent bus serving the Centre Street corridor. As such, while a center-running configuration is clearly preferable on the Tremont-Riverway section, a side-running configuration might be preferable on portions of South Huntington. This is particularly the case on South Huntington approaching the right turn on to Riverway, where the left lane, which is used by left-turning traffic and streetcars, is often congested, while the right lane flows freely. It would also allow an accessible, level-boarding station for trolleys and buses to be built integrated into the sidewalk.

While the right lane need not necessarily be an exclusive transit lane, moving the trolley cars from the left lane to the right—if geometry allows them to then swing into a center right-of-way on the leg of Huntington leading to Brigham Circle—would allow them to bypass this congestion. In the other direction, the right lane of Huntington Avenue westbound—the one which leads to the Jamaicway and Route 9—features far longer queues than the lane leading to a left turn onto South Huntington, so dedicating that left lane to transit should have minimal impact on queuing. Transit signal priority at this intersection would also allow transit vehicles to trigger favorable signals, rather than having to wait in queues.

In the Hyde Square area, finding an adequate terminal proves somewhat challenging. South Huntington is not quite wide enough for a multi-track terminal to be easily built (although it would probably be possible) and the most obvious off-street possibility, the parking lots on the Angell MSPCA property, are too far north of the main ridership generators further south in JP. One possibility would be to acquire the properties on the south side of Barbara Street, the acquisition of which would likely cost in the $2-$3 million (given their current assessment, and which could be partially recouped by allow development on part of the parcel or as air rights); these are currently single-story buildings housing small businesses, which could be offered assistance in relocation. This would allow for three tracks and two island platforms for the future 200-foot trains, which is similar to the Expo Line’s Santa Monica terminus in the Los Angeles area. Given the capacity constraints on the central subway, more-frequent service necessitating a larger terminal would likely not be necessary (and two tracks may be sufficient). This terminal would be well-located adjacent to a library and supermarket.

A sketch of a terminal at Hyde Square south of Barbara St. The track shown as dashed may not be necessary.

This extension would also allow a significant recalibration of bus service in the corridor, making the overall system more efficient. The current E Branch is the only branch of the Green Line which has peak demand in the reverse direction, with the dominant flow toward the Longwood Medical Area in the morning and away from it toward downtown in the evening. The  parallel 39 bus has an opposite profile, inbound in the morning and outbound in the evening. This leads to inefficiency: there are often full 39 buses running parallel to empty E trains in one direction and empty buses passing by full E cars in the other. There are, in fact, four overlapping markets served along the Huntington Avenue-Centre Street corridor.

• JP Center/Forest Hills to Back Bay. While this is served by the 39 bus, most residents of this portion of JP are within an easy walk of the Orange Line, which is significantly faster.
• JP Center/Forest Hills to Longwood. This corridor not well-served by the Orange Line, but is served by the trunk of the 39 bus.
• Hyde Square to Longwood. This short trip is currently only served by the 39 bus, but if the E line were extended, it would provide redundant service along this corridor.
• Hyde Square to Back Bay. Hyde Square is the furthest point on the 39 bus from the Orange Line which is not also served by the Green Line. Thus, it is often faster to take the 39 bus downtown than to walk to the Orange Line, despite the congestion encountered by the 39 on South Huntington.

The Hyde Square E Line extension would allow simplification of this route structure. The 39 bus would still be required for the JP Center to Forest Hills trip. However, the two Hyde Square trips, which currently cause most of the crowding on the 39 bus, would instead be replaced by the E Line, which has plenty of room in this "reverse-peak" (as far as ridership is concerned) direction. Thus, the 39 bus could conceivably be truncated to the Longwood Medical Area, since the E Line would provide the necessary service from Hyde Square to Downtown and Back Bay (with service from JP Center to Downtown provided by the Orange Line, or by transferring). The current markets would be preserved, and the half-mile extension of the E Line would be balanced by truncating the 39 bus by three times that distance.

Stations would also be consolidated, to provide accessibility without too-close stop spacing. A single bus/rail station would take the place of Mission Park and Fenwood Road on Huntington Ave, serving the 39, 66 and E Line. The Riverway Station would remain, with the potential to build a level-boarding island for buses and trolley cars. The Back of the Hill and Heath Street stations would be consolidated up the hill and closer to the entrance to the VA. This would provide better access to the VA, the new apartments across the street, and place the station on a less-steep hill. A final station would be just south of Bynner Street (on a straight, flat area) before the terminal at Hyde Square. VA and Bynner could be designed as center platform stations for the E Line, and buses could stop in the travel lanes adjacent to them. This would minimize the need to remove parking spaces.

South Huntington, typical profile. Note that while a curb-lane buffered bike lane would be preferable, this setup allows
additional room for parked cars if the street is narrowed due to snow accumulation without fouling the trolley right-of-way.

South Huntington station profile, with Green Line in mixed-traffic and center platforms for trolleys, side stops for buses. Given the narrow width of the Green Line vehicles (104", or 8'8") it would be easy for cars and bicyclists to pass stopped trolleys in a shared lane. When trolleys aren't present, cars could pass bicyclists.

Truncating the Back Bay portion of the 39 bus would have additional benefits, since it would not necessarily have to end its route in Longwood, but could instead provide through service. One intriguing idea would be to merge the 39 and the western half of the 47 bus. The 47 is an amalgam of bus routes: the original Cambridgeport bus (one of the first streetcars converted to a bus, in the 1920s) was extended across the Cottage Farm Bridge and lengthened over time so that it now runs from Central Square to Broadway, with a running time generally in the neighborhood of an hour. Does anyone ride the entire route? Unlikely, given that the Red Line makes the same trip in under 20 minutes. So the 47 could be broken in to two more manageable sections. The northern/western portion, from Cambridge to the LMA, could be interlined with the 39, allowing a direct trip from Cambridge to Jamaica Plain, a new travel pattern to the growing Cambridge market. City of Boston data show that there are 1500 Jamaica Plain residents who work in Cambridge (7.5% of the population; only the Downtown market is larger, yet there is no direct bus from JP to Cambridge), and this would likely be a popular route, utilizing the "backhaul" portion of the 47 with lower peak demand. The eastern/southern portion of the 47, now a more manageable route, could be extended from Broadway to City Point, allowing a one-seat crosstown ride from South Boston to the LMA. 

A mock-up of an MBTA map showing the E Line to Hyde Square, the 39 Forest Hills-Central and the 47 LMA-City Point.

Between Hyde Square and Heath Street, South Huntington Avenue is wide enough to allow a streetcar, some of the original trolley poles may be salvageable and could be reused, and most importantly, there is an active power feed under the street. Constructing this extension, and the transit priority between Heath Street and Brigham Circle, would be relatively inexpensive, and serve tens of thousands of passengers daily and improve the bus network as well. The half acre of land used for the new terminal at Hyde Square would be balanced by the opportunity to develop a similarly-sized parcel at the current location of the Heath Street Loop (and which would probably allow higher-density development). 

Extending the Green Line to Hyde Square, and improving the line south of Brigham Circle, should be seriously considered by Boston and the MBTA. Such a project would likely be eligible for federal funding, as well, as part of the FTA's core capacity program. This program provides federal funding to projects which increase the capacity of heavily-used transit infrastructure. The stipulations for eligibility are:

• Be located in a corridor that is at or over capacity or will be in five years
• Increase capacity by 10% 
• "not include project elements designated to maintain a state of good repair"

The E Line to Hyde Square appears to check all of those boxes. Is the line over capacity? Have you ever been on the Green Line at rush hour? The ability to run larger 200-foot trains, which would require a new terminal on the E Line, would definitely increase capacity by 10% (in fact, there might be other portions of the Green Line which could included in a core capacity grant package). And since this would be adding new service, it wouldn't be a state of good repair project, even if part of it was to move some of the track on Huntington and South Huntington avenues to allow more efficient service. With the added benefit of the potential for federal funding, this project becomes an even easier sell. 

Bus yards vs TOD: where is the best place to store buses?

Boston has a bus problem. Beyond narrow, congested roads and routes which traverse several jurisdictions—in some cases half a dozen in the span of a single mile—there are simply not enough buses to go around. At rush hour, some MBTA bus routes only have service every 20 to 30 minutes, despite crush-capacity loads on the vehicles serving them. To add significantly more service would require the MBTA to add additional buses to the fleet, but procurement of new vehicles is not the rate-limiting factor. The larger issue is that the MBTA’s bus storage facilities are undersized and oversubscribed, so adding new buses would require adding additional storage capacity to the system, a high marginal capital cost for any increase in service.

Before doing this, the MBTA may be able to squeeze some marginal efficiency from the system. All-door boarding would reduce dwell times, speeding buses along the routes. Cities and towns are working with the agency to add queue jumps, bus lanes and signal priority, steps which will allow the current fleet to make more trips over the course of the day. Running more overnight service would mean that some number of buses would be on the road at all times of the day and night, reducing the need to store those buses during those times (although they might need to be serviced during peak hours, and may not be available for peak service). Still, all of this amounts to nibbling around the edges. Improving bus service may result in increased patronage, and any additional capacity wrung out of the system could easily be overrun by new passengers. The MBTA’s bus system is, in essence, a zero-sum game: to add any significant capacity, the system has to move resources from one route to another: to rob Peter to pay Paul.

Furthermore, Boston’s bus garages are antiquated. In the Twin Cities—a cold-weather city where a similarly-sized bus fleet provides half as many trips as Boston (although about the same number of passenger miles)—nearly every bus garage is fully-enclosed, so buses don’t sit outside during cold snaps and blizzards as they do in Boston. Every facility there has been built since 1980, while several of the MBTA’s bus yards date to the 1930s; some were originally built for streetcars. Boston desperately needs expanded bus facilities, but it also needs new bus garages: the facilities in Lynn, Fellsway and Quincy are in poor condition, and the Arborway yard is a temporary facility with very little enclosed area.

However, what Boston’s bus yards lack in size or youth they make up for in location. The MBTA bus system is unique in the country in that there is no bus service through downtown: nearly every trip to the city requires a transfer from a surface line to a rapid transit line. In the past, elaborate transfer stations were built to facilitate these transfers, with streetcar and bus ramps above and below street level (a few vestiges of this system are still in use, most notably the bus tunnel at Harvard), with bus routes radiating out from these transfer stations. When the Boston Elevated Railway, the predecessor to the MBTA, needed to build a streetcar yard, they generally built it adjacent to a transfer station, and thus adjacent to as many bus routes as possible. Many of these have become today’s bus yards, and the MBTA has some of the lowest deadhead (out of revenue service) mileage to and from the starts of its routes.

From a purely operational standpoint, this makes sense: the buses are stored close to where they are needed. But from an economic standpoint, it means that the T’s buses occupy prime real estate. Unlike rail yards, which need to be located adjacent to the lines they serve, bus yards can be located further away. While this introduces increased deadhead costs to get the buses from the yard to the route, it frees up valuable land for different uses. In recent decades, the T has sold off some of its bus garages, most notably the Bartlett Yard near Dudley and the Bennett Yard near Harvard Square, which now houses the Kennedy School. The downside is that the T currently has no spare capacity at its current yards, and needs to rebuild or replace its oldest facilities.

While the agency has no concrete plans, current ideas circulate around using park-and-ride lots adjacent to rail stations for bus storage, including at sites adjacent to the Riverside and Wellington stations. The agency owns these parcels, and the parking can easily be accommodated in a nearby garage. The issue: these parcels are prime real estate for transit oriented development, and putting bus garages next to transit stations is not the best use of the land. Riverside has plans in place, and Wellington’s parking lot sits across Station Landing, which has hundreds of transit-accessible apartments.

In addition to what is, in a sense, a housing problem for buses, the Boston area has an acute housing problem for people. The region’s largest bus yards are adjacent to Forest Hills, Broadway and Sullivan Square: three transit stations with easy downtown connections. These issues are not unrelated: there are few large parcels available for housing or transit storage (or, really, for any other use). If the region devotes land to housing, it may not have the ability to accommodate the transit vehicles needed to serve the housing (without devolving the region in to further gridlock). If it uses transit-accessible land for storing buses, it gives up land which could be used for dense, transit-accessible housing. What the transit agency needs are sites suitable for building bus depots, on publicly-owned land, and which would not otherwise have a high-level use for housing.

Consider a bus maintenance facility: it is really something no one wants in their back yard. And unlike normal NIMBYism, there actually some good reasons for this: bus yards are noisy, have light pollution, and operate at all times of day, but are especially busy for early morning operations. An optimal site for a bus yard would be away from residences, near highways (so the buses can quickly get to their routes), preferably near the outer ends of many routes, and not on land which could otherwise be used for transit-oriented development. It would also avoid greenfield sites, and preferably avoid sites which are very near sea level, although if necessary buses can be stored elsewhere during predicted seawater flood events.

The MBTA is in luck. An accident of history may provide Boston with several locations desirable for bus garages, and little else. While most sites near highways don’t have enough space for bus yards, when the regional highway system was canceled in the early 1970s, several interchanges had been partially constructed, but were no longer needed. While portions of the neighborhoods cleared for highways have been, or could be, repurposed in to developable land, the “infields” of highway ramps is not generally ripe for development. Yet they’re owned by the state, currently unused, convenient to highways and unlikely to be used for any other purpose. For many bus routes, moving to these locations would have a minimal effect on operation costs—deadhead pull-in and pull-out time—and the land will otherwise go unused. Land near transit stations is valuable. Land near highways is not.



Building bus yards in these locations would allow the T to add vehicles to the fleet while potentially closing some of its oldest, least-efficient bus yards, replacing them with modern facilities. They wouldn't serve all routes, since many routes would still be optimally served by closer-in yards with shorter deadhead movements to get the buses to the start of the route. (To take this to an extreme: it would be very cheap to build a bus yard at, say, the former Fort Devens site, but any savings would be gobbled up by increased overhead getting the buses 35 miles to Boston.) Highway ramps are optimal because it allows buses to quickly access the start and end of routes, many of which, by history and happenstance, are near the highways anyway.

Most importantly: moving buses to these locations would enhance opportunities for additional housing, not preclude it. Building thousands of new housing units adjacent to transit stations pays dividends several times over. It increases local tax revenues and also creates new, fare-paying transit riders without the need to build any new transit infrastructure. Finally, by allowing more people to use transit for their commutes, it reduces the growth of congestion, allowing people driving—and people riding transit—to move more efficiently.

Specifically, there are five highway sites in the region which could be repurposed for bus fleet facilities:

• Quincy, in between the legs of the Braintree Split
• Canton, on the aborted ramps of the Southwest Expressway
• Weston, where the new all-electric tolling has allowed for streamlined land use
• Burlington, in the land originally planned for the Route 3 cloverleaf
• Revere, in the circle where the Northeast Expressway was originally planned to branch off of Route 1 through the Rumney Marshes.

In more detail, with buses counts from the MBTA’s 2014 Blue Book. These are in-service buses required, so the total number of buses at each location, accounting for spares, would be 15 to 20 percent higher. The system currently maintains approximately 1000 buses.

Quincy (67 buses)

All 200-series Quincy Routes

The current Quincy garage serves the 200-series routes, with a peak demand for 67 vehicles. The current garage is in need of replacement. The current yard takes up 120,000 square feet on Hancock Street, half a mile from Quincy Center station. This could easily be accommodated within or adjacent to the Braintree Split, with minimal changes to pull-out routes. Serving additional routes would be difficult, since the nearest routes run out of Ashmont, and pull-out buses would encounter rush hour traffic, creating a longer trip than from the current Cabot yard.

Canton (35 buses)

Routes 24, 32, 33, 34, 34E, 35, 36, 37, 40

This would be a smaller yard and would probably only operate during weekdays with minimal heavy maintenance facilities, but would reduce the overall number of buses requiring storage elsewhere.

Weston (71 buses)

Routes 52, 57, 59, 60, 64, 70/70A, all 500-series express bus routes.

With the recent conversion to all-electronic tolling on the Turnpike and different ramp layout, the land is newly-freed, plentiful, and many buses serving this area have long pull-out routes from Boston. The portion between the two branches of the Turnpike and east of the 128-to-Turnpike ramp is 500,000 square feet, the same size as the Arborway Yard, and there's additional room within the rest of the interchange. Without a bus yard west of Boston, any route extending west or northwest would benefit from this yard.

Burlington (50 buses)

Routes 62, 67, 76, 77, 78, 79, 134, 350, 351, 352, 354

These routes utilize serve the northwest suburbs, but most are served by the Charleston and Bennett divisions in Somerville. Most routes would have significantly shorter pull-outs.

Revere (157 buses)

The two oldest bus garages north of Boston are Lynn and Fellsway, which account for a total of 125 buses and about 200,000 square feet. They are both centrally-located to the bus network, so moving buses to the 128 corridor would result in longer pull-outs, except for a few routes noted above. However, the circle where Route 1 turns northeast and the Northeast Expressway was originally planned and graded towards Lynn across Rumney Marshes has 750,000 square feet, and the extension towards the marshes more. The fill is far enough above sea level to not worry about flooding, and grade separation allows easy exit and entry on to Route 1. Some buses may make sense to base at the Route 3 site, particularly the 130-series buses. In addition to the Lynn and Fellsway buses, this site could take over for many routes currently operating out of the Charlestown yard, freeing up capacity there for other uses.

Other routes served by the Charlestown yards would face somewhat longer pull-out times from Revere, but given the development potential in Sullivan Square, the T could consider downsizing the yard facility there and moving operations to a less valuable site. This site, at more than one million square feet, could likely replace the Charlestown bus facility entirely.

The mystery of the 600 feet between the Red and Blue lines

Last month, the MBTA presented its "Focus40" list of items it wants to complete by 2040. The Commonwealth Magazine article noted that the report states that the Blue and Red lines are only 600 feet apart, and connecting them would provide a two-minute walk in lieu of the Red-Blue connector at Charles. This sounds good. The only problem with this is that the Red and Blue lines are more than 600 feet apart. Quite a bit more. In fact, the walk from a Red Line train to a Blue Line train is more than three times as long. Where did the 600 foot figure come from? Let's find out, with old-timey maps!

The Red Line runs beneath Winter and Summer streets. The Blue Line runs under State Street. These streets are, according to Google Maps (and, I assume, in real life), more than 1500 feet apart. But it turns out, that's not even the real distance you'd have to walk between the subway lines. Boston's subways were not built in a particularly coordinated fashion (although, unlike New York, which had two competing subway companies, the Boston Elevated Railway, or BERy, was the only game in town). The Green Line tunnel was built first, the Blue Line second (and, thus, below the Green Line) and the Orange Line tunnel third below the Blue (the Orange Line running through downtown predates the Blue Line, but for 7 years it ran on the Green Line's tracks). Each newer tunnel went under the others, which is why the Green Line runs above. The Red Line wasn't built until several years later, running below both the Green and Orange lines.

All of the lines were built within the confines of Boston's notoriously old and narrow street grid, which was nearly three centuries in the making even then. So to fit stations in, and stairs between subway lines, both the Red and Blue Line stations are offset east of the Orange Line, and the Orange Line platforms are offset on separate sides of the subway to fit within the width of Washington Street.

Up until the 1960s, in fact, platforms were referred to as separate stations by the street they intersected, rather than station names. So the Downtown Crossing complex was referred to as Winter for the Forest Hills-bound platform, Summer for the Oak Grove-bound platform (then the Everett-bound platform) and Washington for the Red Line platforms. (It doesn't help matters that most road names in Boston change at Washington Street.) Similarly, State was Milk-State on the Orange Line and Devonshire on the Blue Line. This seems nonsensical, until you think about it: to get to the Milk Station, you entered on Milk Street. To get to the State station, you entered on State Street. There are more examples; as this page posted long ago.

In any case, the Blue Line platform extends east from Devonshire Street, hence the name. The Red Line platform has entrances on Washington Street, but the actual platform begins around Hawley Street. To walk from Hawley to Devonshire via Washington? That turns out to be a walk of 1900 feet, up (or down) two stairs (since the Orange Line is built under the Blue Line, and the Red Line is under the Orange Line).

So where does this 600 foot figure come from? I'm actually not quite sure. What I think the number is indicating is the distance which would have to be dug between the two Orange Line platforms to provide a pedestrian connection between the Red and Blue lines. To make sense of this, we're going to have to think in three dimensions (at least). Lucky for us, the Boston Transit Commission issued yearly reports during the construction of the subways in the early 1900s, and Ward Maps has them on their website (and has provided me with some high-resolution copies for this article, so shout out to Ward Maps for being excellent).

Remember that the Orange Line platforms are offset laterally. At Downtown Crossing, for instance, the northbound platform extends from Summer Street 350 feet north to Franklin Street, and the southbound platform south to Temple Place. In fact, the MBTA has been experimenting with new GTFS features to show the layout of Downtown Crossing, which you can view here. (Note, on the right side, the multiple levels; click B1 and B2 to toggle between.)

For the Milk-State platforms, this gets a bit more complicated. Washington Street is narrow enough at Winter/Summer: about 60 feet between buildings, but by the time you get to Milk Street, it's narrower: only about 40 feet. Some of Boston's oldest buildings stand here—the Old South Meeting House and Old State House date to the early 1700s—and the subway had to be built between the foundations; in the case of the Old State House, a subway entrance was built right in to the basement. (There are also newer buildings and, because reasons, parking garages.) This is barely wide enough for two subway tracks and a platform. So what did they do? They offset the platforms vertically: in effect, they stacked the trains.

Here's what the tunnel looked like just south of the Milk platform when it was under construction around 1906:

Original caption: Portion of platform of Milk St Station over the track for northbound cars. 
For orientation, the Old South Meeting House is approximately to your right (and above). Original file.

If you're familiar with State station, this is the platform you exit off of coming on a train from Oak Grove. To get to the Blue Line, you walk along a corridor which is sort of an extension of the platform—dubbed, apparently, the speedway (from this detailed 1909 article on the tunnel), and now home to funky colors—and then the State platform, with trains to Oak Grove also to your left, and with escalators to the Blue Line to your right.

Here's a map from 1913 showing the stations (and, yes, it's the best map I can find of the actual locations of station concourses). I've shown current station names in all-caps, and former station names in lowercase; for DTX and State, I've outlined the platforms in their current colors and labeled the platforms with their original names. Note that while the Orange Line platforms were built 350 feet long, and only had to be lengthened minimally to accommodate six-car trains. (Original file from Ward Maps)

View the full-size version.

I think the idea to connect the Red and Blue line stations comes from the fact that the Milk platform (the southbound State platform) extends to Milk Street, and the Summer platform (the northbound Downtown Crossing platform) extends to Franklin Street, and those streets are only about 300 feet apart. I'm still not sure where the 600 comes from, but 300 is half of 600, so this should be twice as easy. Right?

Well, not quite. Look back up at the photograph above and imagine extending the Milk (Southbound State) platform shown 300 feet east (towards you) to meet the Summer (Downtown Crossing) platform. It would have to extend above the Oak Grove-bound Orange Line platform. When Oak Grove trains leave Downtown Crossing, then descend quickly to dive under the Milk Street platform pictured, descending at a 5.5% grade. So this would not be a level ramp by any means; in fact, a 5.5% grade exceeds the maximum allowed by ADA regulations, so it couldn't even be built above the tracks with infinite space above. Which is kind of moot anyway, because it would also butt up in to the top of the tunnel pretty quickly. It would therefore have to jog south of Washington Street's right-of-way, under the buildings there, which would add complexity to construction and yet more distance to the walk.

From 1906, here's an elevation profile of the entirety of the Washington Street tunnel (now the Orange Line) connecting the elevateds north and south of the city (from 1901 to 1908, the elevated trains ran through what is now the Green Line, and the abandoned Pleasant Street Portal). I've added some annotation to it. The vertical orange lines show the ends of the platforms which would be used as the route for the pedestrian path. I've also shown the location of the Red Line (not built at this point) and the Blue Line (called then the East Boston Tunnel, or the E.B.T.). I've also superimposed the location of the other-direction Orange Line platforms on each drawing, and used black lines to superimpose other elements of the tunnel. I mainly want to draw attention to the fact that a passageway between the Summer and Milk platforms could not fit within the current envelope of the Orange Line, and would have to be built to the south, because to the north there are train tracks in the way, and to the south there is the minor issue of building foundations being in the way.

View the full-size version.

Again, this comes from Ward Maps, and the original file is here, and while the original has been sold (and, alas, not to me) you can get a reprint to hang on your wall (which I am considering).

So what are the takeaways from this little exercise?

• While the Orange Line platforms and concourses would allow a connection to be made between the Red and Blue lines, it would amount to a walk of more than a third of a mile, up or down multiple staircases, and along already narrow and crowded subway platforms. That's 8 minutes of walking, plus climbing some stairs, and that's assuming you can walk at 3 mph down crowded platforms. At rush hour, it might take a good deal longer. It would probably be faster to just take the Green Line one stop from Park to Government Center, since the Green Line is directly above the Red and Blue lines.
• The 300 feet which would be needed for an additional tunnel would have to go through and underneath the building foundations outside of the footprint of the street, because the Orange Line is already threaded under Washington Street, which is very narrow.
• The entire utility of this connection could be realized by allowing an out-of-system transfer between Downtown Crossing and State, which will be possible with the new fare system currently being procured. It only adds one flight of stairs: two up from Red to street level, then one down to Blue.
• This would do little to actually address the issue of core capacity, which is what the Red-Blue connector aims to address. Even if this was convenient for people to use, it wouldn't result any less crowding on the Red Line, and the Orange Line and Blue Line platforms would actually become more crowded than they are today.

As the last point alludes to, the reason for building a Red-Blue connector—a real, actual Blue Line extension to Charles/MGH—is two-fold. One is to provide a good connection between the Blue Line and the Red Line. Perhaps as important, however, is to pull some of the demand out of the core stations of the subway. Rather than crowding trains and concourses at Park, Downtown Crossing, Government Center and State, riders between East Boston and Cambridge would be able to bypass the busy core of the system altogether. You get that if you actually build a Red-Blue connector tunnel. You get that only if you actually connect the two lines, not if you build a long, arduous pedestrian connection and sell it as an innovative piece of infrastructure.

And, alas, I still have no idea where the the 600 foot figure came from.

In the weeds: South Coast Rail

Sometimes I take some issue with CW's headlines, but I like this piece overall. (I wrote it. Suggested headline was "to build SCR, look to the roads.")

A few in-the-weeds notes:

The route straight along the right-of way in Norton looks nice, but it has a few issues. It passes quite near to several homes, and would probably raise NIMBY issues. It is mostly owned by the town of Mansfield, which has a sewage treatment facility in Norton near the Taunton Line, and uses the ROW for a sewer pipe, which might have to be relocated within the right-of-way. There are some very low-angle grade crossings which would require extensive roadwork to make safe (or require grade separation). Extending down the 495 median to bypass this makes a lot of sense.

This post assumes electrification, although the original reason for the army corps to demand electrification was something about crossing the Hockomock Swamp. Still, electrification is the only way to allow high speed operations from Boston to Taunton, and between Taunton and Fall River and New Bedford. The maximum curvature on this portion of 495 is less than 1˚, which would allow 110 mph operation. Amtrak Regional trains reach Mansfield in 25 minutes from South Station, so even making stops at Mansfield and Myles Standish, an electrified Commuter Rail train could make Taunton in under 40 minutes.

Not only is the Taunton Station located closer to downtown using this route, it is also located adjacent to the main GATRA transfer point. Of course, fixing GATRA would help; Miles is not particularly enamored with their service. It would also be adjacent to some land which would be primed for TOD, and would likely increase in value if it were 40 minutes from Downtown Boston.

Myles Standish Industrial Park is sort of the wild card here. I am considering that having passenger rail access would be a net benefit, and that providing a right-of-way would not be particularly costly. The three buildings which would require takings would cost about $10 million; the additional land taking would add a bit more. I'd propose a viaduct to access the industrial park and cross the main roadway (Myles Standish Blvd)—which the current ground profile makes relatively easy—before running in the middle of Robert Treat Paine Drive, which could be relocated on to either side of the new rail right-of-way. It is at least 240 feet between any buildings in this corridor, the western portion of which has an overgrown and disused freight spur. A two-lane roadway could be built on either side with room to spare. The crossing of John Hancock would require an engineering decision of whether to build it at-grade or on a short overpass.

The map below shows the path through Myles Standish, with the path of a new Robert Treat Paine Drive show in dashed lines on either side of the right-of-way.

The "station area" would allow access to most of the industrial park (although better bicycle/pedestrian access would help) and may allow zoning changes and higher density. There is no housing in the park itself, but some nearby. Here's what a profile of the roadway might look like, and there is plenty of room for all of this. (And, no, I'm not sure you need an eight-foot-sidewalk plus a two-way cycletrack on each side of the roadway, nor two lanes of traffic and parking for a road which currently carries 1500 vehicles per day, but the room is there. Also, imagine the streetlights in the middle are catenary poles and wire.)

via Streetmix

There are two potential issues building in the 495 corridor. The first is environmental. 495 crosses through the Canoe River Area of Critical Environmental Concern (ACEC), a good map of which can be found here. This would raise some permitting issues, particularly since 495 crosses the Canoe River twice, to assure that steps were taken to mitigate any impact to the surrounding environment. The ACEC was designated in 1991, long after 495 had been laid out and built; it's safe to say that if the highway were built today, it would be built with a smaller footprint which would preclude its easy use as a railroad right-of-way.

The second issue is that 495 has sloping concrete bridge abutments. This would require some construction to demolish portions of the concrete, shore up the remaining concrete, and provide a trackway for rail service. An example is here. This would be a minor issue, although the rail bed might have to be undercut slightly lower than the highway to provide clearance for any freight and electrification. There are a total of five over grade bridge along the highway; the only new rail bridges required would be the two aforementioned crossings of the Canoe River.

Finally, a proposal for the Mansfield Station. Mansfield is one of the busiest Commuter Rail stations, with more than 2000 daily passengers and some trains picking up or dropping off as many as 400 passengers. By boarding at fewer doors and forcing passengers to climb stairs, this adds several minutes to each train passing Mansfield Station, potentially adding 10 minutes to the run time from Providence to Boston for busy trains. The station is on the STRACNET—the military rail network—route to Otis AFB (or whatever it's called now) and requires wider freight clearances at stations (you can find a map of STRACNET toggling around here) and that is cited as a reason high-level platforms can't be provided. 

The idea would be to rebuild Mansfield Station as a three-track, two-platform station. The existing eastbound track (the number 2 track, "inbound" towards Boston) would remain in place, and a high-level platform would be built just east of the station house. The existing westbound track (the number 1 track, "outbound" towards Providence) would also remain in place, with a high-level platform built where the platform exits today. Two additional tracks would be added. The first would be a passenger track adjacent to the platform, branching off of the NEC east of the station. This would continue on as the southbound SCR track, eventually rising up and over the NEC to access 140 and then 495. (The northbound track would not have to cross the NEC and would merge in to the existing eastbound NEC track near West Street.) The second track would be a realignment of the Framingham Secondary, which would parallel the platform before merging in to the SCR and NEC west of the station, providing a wide freight route. An additional connection could be built between the NEC and the Framingham Secondary east of Mansfield if a wide route was needed there. 

Here is the proposed layout of the Mansfield station, with red lines showing new track, and yellow showing platforms:

And here is a route map showing the general track configuration from Mansfield to 495 (interlockings and small connections are omitted):

The original map (see the top of the page) proposes a station near the Xfinity Center. The concert venue is less-used than it once was (apparently at its peak, it hosted 80 shows annually, today it is more like 36) but it still causes traffic and today can only be reached by car (or, I guess, a cab or TNC from Mansfield). A park-and-ride station at Route 140 in Norton would provide a good park-and-ride location for people on 495 or who live in Norton and currently use the Mansfield P&R (with the additional benefit of reducing the number of people driving to downtown Mansfield just to park). The site there formerly contained an indoor soccer facility and has been vacant for years; there's a plan to build a hotel there. MassDOT owns the three acres closest to the highway which could be used as a park-and-ride. As for the Xfinity Center, a train station would be about a 15 minute walk from the venue, mostly through the existing parking lots. Given the time to walk to a far-away car and get out is often longer than that, taking the train might be a good option for concert-goers.

Finally, another plug for a direct ferry connection in New Bedford with a station adjacent to downtown. Getting to the Vineyard today requires a drive to Woods Hole (or in some cases, New Bedford, Providence or elsewhere) but since the majority of travel is via Woods Hole, it requires crossing the Cape Cod Canal, in traffic, a two-hour drive from Boston or more at peak times. With parking, taking a shuttle to the canal and the ferry itself, travelers need to budget four hours to get to the Vineyard. With a 51 minute travel time to New Bedford from Boston and an hour-long ferry ride this trip could be turned on its head, with two-hour travel times from Downtown Boston. Considering that there are millions of ferry trips made each year, and that the majority of visitors to the islands don't bring a car, this would provide a much more convenient trip to the island and would probably garner high ridership.

Bus shuttle upsides: Finding opportunities from irregular operations

Starting next weekend, the Lowell Line will shut down on weekends for nearly six months, to allow the installation of Positive Train Control (PTC) and expedite track work for the Green Line extension. These are worthy and necessary projects. PTC will make the Commuter Rail system safer and more reliable, and GLX will bring better transit options to tens of thousands of daily riders.

No one likes a bus shuttle, but they do give us an opportunity to try new and innovative service patterns. Yet the T has taken the Lowell Line schedule and made it all but unusable, nearly tripling the duration of a trip from Lowell to Boston, while at the same time ignoring nearby resources—the 134 bus and the Haverhill Line—which would be duplicated by the Commuter Rail replacement service. TransitMatters recently wrote about how the MBTA could optimize Orange Line shuttles in Roxbury and Jamaica Plain using parallel Commuter Rail service, and this page has written about how the MBTA could optimize the Alewife-Harvard shuttle. This is a similar idea.

The Lowell Line dates to the 1830s—one of the first railroads in the world—when the Boston and Lowell Railroad was built as a freight line to serve the factories on the Merrimac. Its proponents underestimated the potential for passenger traffic and for the most part avoided existing town centers, yet the fast travel time—a stagecoach trip took most of a day, and even in 1835 the B&L made the trip in under an hour—attracted significant passenger traffic: an early lesson in the concept of "induced demand." Two centuries later, the trip is still reasonably fast, direct and, because it was originally built to avoid town centers, hard to approximate with buses on nearby streets.

The railroad runs 25 miles from Boston to Lowell, while a bus zigzagging to serving each station runs 35, nearly all on narrow, local roadways. No wonder the schedule from Wellington to Lowell requires an hour and forty-five minutes. This is the reason that permanent replacement Commuter Rail service with buses on the weekend which is floated from time to time is a non-starter: buses are unable to efficiently make intermediate stops in town centers over a long distance. Rail service can, and, with the implementation of Regional Rail elements (i.e. level boarding platforms, faster-accelerating electric trains), could do so more quickly and efficiently than it does today.

As proposed, the Lowell Line bus replacement schedule makes use of Wellington’s proximity to I-93, and buses begin there, rather than downtown. This is similar to the busing taking place this summer on the Worcester Line, where buses have connected to the Green Line at Riverside. Yet for the Worcester Line, the T provides express service from Framingham to Riverside (which is significantly faster than the local route) and local service to serve stops in between. For the stations in Newton, no service is provided, but nearby bus routes, and the Green Line, provide service without slowing the trip from further out.

A similar concept could be applied to the Lowell Line. There is no redundant service for the outside portion of the route: a bus trip making each stop from Lowell to Anderson/Woburn is scheduled to take 45 minutes, as long as the full rail trip from Lowell to Boston. From there, rather than wending their way through Woburn, Winchester and Medford, replacement service could run express down I-93 to Wellington, reaching the Orange Line in an hour and, with a transfer, getting a traveler North Station in 1:15, not a particularly fast trip, but better than a two-hour crawl. For trips to and from Winchester and West Medford, no additional service would be required: it’s already there in the form of the 134 bus.

The 134 runs almost the exact same route as the proposed replacement shuttle. It passes through Winchester Center, within a stone’s throw of Wedgemere, and a half mile from West Medford (which is served directly by several other bus routes), from which it continues to Wellington. The service is provided hourly, which is more frequent than the Commuter Rail shuttles, so intermediate travelers from, say, Winchester to Lowell could ride into Wellington, and connect to a bus to Lowell. To provide the same span of service would require that a few buses—two on Sunday morning and two each evening—be extended by a few stops to Winchester (this might be something small enough that it could be done in the short term, without waiting for a new schedule). Most passengers would find taking the 134 as convenient, if not more so, than the replacement shuttles.

This idea would also save the T operating costs. The current Lowell Line shuttles are scheduled to take 1:45 from Lowell to Wellington, and 1:45 back. Running directly from Anderson/Woburn to Wellington would cut this to an hour, saving nearly 90 minutes of operating time for round each trip. With 16 round trips each weekend, this would save 22 hours of operation. Extending a few 134 trips to Winchester would claw back three or four additional hours of service, but it would still result in 18 hours of operating hours saved each weekend. Given that this project is slated to run from now until December, it will affect 20 weekends of service, and if a bus costs $125 per hour to operate, this would save the MBTA $45,000 in operating costs.

Another option, rather than running buses to Anderson/Woburn and on to Wellington, would be to skip the Anderson/Woburn stop—which is a large park-and-ride, so people using it could park at other, nearby stations—and run directly from Wilmington to Reading instead and connect to Haverhill Line service. This train runs parallel to the Lowell Line only a mile to the east, and Reading would be roughly a 40 minute ride from Lowell. The Haverhill Line weekend schedule would have to be increased slightly to provide the same level of service that the Lowell Line does: currently the Haverhill Line is served by only six trains on a weekend day, with three hours between trains. With the Lowell Line shut down, Keolis should have some additional staff available for these trains, since the net operation would still be less than the Lowell Line running. This would not only better-utilize existing resources and provide a better product to the traveling public on the Lowell and Haverhill lines (although the cost savings from less busing may be canceled out by running more trains), but it would draw in new riders to the Haverhill Line with more frequent service.

This table assumes a cost of $125 per hour for bus service, $750 per hour for rail service (estimated here), and that each train would only require a single bus.

Alternative	Travel Time Lowell↔Boston	Bus Hours	Train Hours	Cost: per weekend | total
Local bus to Wellington	2:00	56	0	$7000 | $140,000
Express bus to Wellington	1:15	38	0	$4750 | $95,000
Bus to Haverhill Line	1:10	26	9	$10,000 | $200,000

Assuming you'd need two buses to handle any instances with more than 50 riders, the calculation would be:

Alternative	Travel Time Lowell↔Boston	Bus Hours	Train Hours	Cost: per weekend | total
Local bus to Wellington	2:00	112	0	$14,000 | $280,000
Express bus to Wellington	1:15	76	0	$95,000 | $180,000
Bus to Haverhill Line	1:10	52	9	$13,250 | $265,000

While the Reading/Haverhill Line alternatives cost more (because they require more railroad operations) passengers would pay a Commuter Rail fare from Reading, nor does it take in to account additional Haverhill ridership, which would recoup some of this expense. Another alternative would be to have Amtrak's Downeaster trains stop at Reading for bus passengers to Lowell, although capacity may be an issue. These estimates do not take a detailed look at how buses would be deployed, although the current schedule seems to show buses laying over at Wellington and Lowell for more than an hour, hardly an efficient use of resources. The Haverhill Line alternative, in particular, would allow a bus to make a round-trip in two hours, matching the frequency of improved train service there.

The installation of PTC gives us opportunities to experiment with different replacement service. Instead of simply drawing a line on a map, the T should be creative in leveraging existing infrastructure to provide the best possible product to the traveling public, while at the same time finding ways to reduce operating costs. These often go hand-in-hand, and the Lowell bus service is an example of how, with some small changes, the T could save time for its passengers and money for itself.