» Boston’s Green Line extension, bloated after years of planning, gets slimmed down. A lesson for other cities.
Given how reliant the people of New York City are on their Subway, an outsider just looking at ridership data might conclude that the system must be paved with gold, or at least its stations must be decent to look at. After all, it wouldn’t be unreasonable to assume that the comfort of a transit system plays an essential role in encouraging people to abandon their cars and get on the train or bus. That’s why, some would argue, it’s so important to put amenities like USB charging and wifi into transit vehicles.
Yet anyone who has ever ridden the Subway knows first hand that its success has nothing to do with aesthetics or access to luxury amenities. Stations are hardly in good shape, trains are packed, and cell service is spotty at best. People ride the Subway in spite of these things; they ride it because it’s fast, it’s frequent, and it’s (relatively) reliable.
Too often, this simple fact is ignored by public agencies actually making decisions about how to invest. New York’s own $4 billion World Trade Center Transportation Hub—perhaps the world’s single-most expensive station—is evidence of that; rather than improve service frequency or speed, officials chose to direct public funds to a white monument that does nothing to actually ease the lives of daily commuters.
Initial plans for the MBTA’s Green Line extension, which would extend light rail service from Cambridge into Somerville and Medford—all three are close-in suburbs of Boston—featured none of the extravagances of downtown Manhattan’s new transit terminal. Yet it too was designed with unnecessary features that, while nice, did little to actually solve the travel needs of its future users. Its projected construction costs exploded such that officials announced last year the proposal could be cancelled. Now, after several months of review, the MBTA and the state government have voted to proceed with design changes meant to significantly bring down costs—but without compromising the quality of transit service to be offered to riders.
Agencies with pricey projects around the country should look for similar opportunities to minimize costs.
A rail line for one of the nation’s most transit-friendly communities
The seven-station extension of the Green Line proposed for Boston would be the region’s first rapid transit expansion since the completion of the Red Line extension in 1985. Running along two branches northwest from today’s terminus at Lechmere—one branch to Union Square in Somerville, the other to College Avenue, near Tufts University—the 4.7 miles of new track would run along existing commuter rail lines and connect to some of the country’s densest, most transit-friendly neighborhoods. See the Transit Explorer map for details.
The project would vastly improve connections of Somerville and Medford residents to jobs hubs in Cambridge and Boston and is expected to attract 45,000 daily riders by 2030. That would make it one of the most effective projects in the nation from the perspective of riders per mile operated.
The project has been in planning for decades. A 1990 lawsuit required that the line be completed by 2011 as a sort of trade-off in exchange for the completion of the Big Dig. But faced with limited funding, mounting MBTA debt, and a lack of adequate state political support, the project failed to gain traction and the state kept pushing it off. Finally, initial construction activity began in 2013 and the federal government agreed to provide a significant New Starts grant to the project in 2015.
Yet even as the project advanced, its estimated construction costs mounted ominously. Federal reports show total costs rising from $1.1 billion in 2013 to $1.7 billion in 2014 to $2.3 billion in early 2015. By late last year, the project’s budget had reached $3 billion, and the state announced that it was not only cancelling certain contracts related to its completion but also that, in the context of a transit agency stretched beyond anything it could handle, it was considering cancelling it altogether.*
Redesign by necessity
But the MBTA submitted the Green Line extension to a review by a project management team, and that group released its report on how to save the project yesterday. The document details how the project’s price tag could be substantially reduced, returning it to a (still-expensive but) doable $2.3 billion cost.
The changes are reasonable because, rather than cutting the quality of service provided to riders in terms of transit service, they focus on aesthetic elements that, even if they improve the general atmosphere of the system, likely do little to actually get people onto trains. The essentials, like the frequency of trains, their speed, and their capacity, are maintained.
What the team does recommend is vastly simplifying proposed station designs. As the below chart from the report indicates, the stations would be slimmed down. 15 elevators would be replaced by six (while maintaining wheelchair accessibility throughout); escalators and fare gates would be eliminated entirely; and full-length station canopies would be cut down to shelters. In total, these changes would slash almost $300 million from the project budget, with virtually no impact on ridership experience.
The changes will make the MBTA’s built footprint less visible; there will be no Calatrava extravagances here. As the below images show, Ball Square station in Medford was initially designed to feature a plaza, a headhouse (a multi-story building featuring elevators and escalators), a concourse, and a fully covered platform. What would be built in its place is an open-air and very simple train stop, with more room for future transit-oriented development.
Customers may suffer through the cold for a few more minutes, but trains will come frequently enough that shouldn’t be a major concern. Meanwhile, MBTA will save itself millions of dollars of future maintenance costs not upkeeping expensive and unreliable machinery and not keeping thousands of square feet of interior space clean. These savings aren’t even accounted for in the capital costs of the project but they’ll pay off in a lower operating budget for years to come.
| Initial proposal | Revised proposal | |
 |
 |
The management team also proposes a reduction in the size of the proposed vehicle maintenance facility and affiliated transportation building, which together will save more than $100 million and not affect the MBTA’s ability to keep trains moving. An expensive parking deck will be replaced with a parking lot. Bridges that the initial plan suggested needed to be completely replaced will be simply renovated.
If the choices about what to eliminate seem obvious, consider the alternative: The Purple Line in suburban Washington, D.C. also underwent a considerable cost-cutting process earlier this year. Yet the changes there will reduce passenger quality of service by increasing headways between trains, reducing train capacity, and lengthening the walking distance between the line and a Metro station in Silver Spring. While these efficiencies aren’t dramatic enough to imperil the overall value of the line, they will hurt the passenger experience in the long term, while those on the Green Line will not.
The changes in Boston must be approved by the Federal Transit Administration, which has final say over whether the redesigned project meets the initial project goals. And local governments need to scrounge up an additional $73 million to meet the gap in project costs that remains—without this funding, the project could still be on the chopping block. Yet these are surmountable obstacles and the project now seems likely to move forward.
Nuance by design
Boston’s example is no panacea; the quality of the transit environment does matter. While nice materials, enclosed stations, escalators, and overhead canopies may do little to expand ridership, they improve peoples’ daily experience, and that’s important. The nicer we can make the public sphere, the better our cities will be to live in.
But it’s refreshing to see a transit agency propose a cost-cutting approach that does nothing to negatively impact the level of service being proposed. Rather than take out a constricted budgetary environment on riders by reducing service, the MBTA is proposing to stick to the essentials, and that’s the right move.
Were construction costs in Boston lower, the MBTA could afford to give riders both good service and a comfortable environment. But like transit agencies around the country, the MBTA has been unable to lower costs to international standards. In this environment, it serves as a model for other agencies looking to invest in transit on a limited budget.
* There is some question as to whether the state actually can ever cancel the project, given that it was mandated through the legal process.
Image at top from Flickr user Bill Damon (cc). Other images from Green Line project management team report.
