Massachusetts Bay Transportation Authority (MBTA) Massachusetts Department of Transportation
Green Line Extension Green Line Extension

A GLX Update from MBTA General Manager Frank DePaola

October 21, 2015

I would like to update you on the current status of steps we are taking to move the Green Line Extension project forward.

As you know, we are experiencing a significant and very challenging growth in the cost of constructing the Green Line Extension. Our preliminary analysis indicates that the project costs may exceed our last budget estimates by as much as $700 million to $1 billion. This setback requires changes to the project and/or additional sources of funding, as well as reconsideration of whether MassDOT and the MBTA can continue with the project.

A presentation was made today to the MassDOT Board of Directors about where things are with our review of the GLX Project. View the GLX Update Presentation

I ask for your patience and assistance as we work through this very challenging situation. The GLX Project Team and MassDOT/MBTA as a whole are focused on addressing the issues as quickly and as thoughtfully as possible. However, we must make sure that we completely understand the current cost-to-complete of the overall project, as well as the implications of any changes to the project design.

I want to emphasize that the Baker-Polito Administration, the Federal Transit Administration, and your community leaders have all been closely involved and extremely supportive during this period. It is crucial that we approach these challenges with cooperation and collaboration. In that spirit, I urge you to share your thoughts, concerns, and suggestions at

I also want to call your attention to the Massachusetts Department of Environmental Protection's review of transit projects. MassDEP is holding a public meeting on MassDOT's update and status report, where people can make oral and written comments on transit system improvements. That session is on Nov. 16, 2015, at 1 p.m. at the Washington Street Conference Center, 1 Winter St., Boston. Written comments can be submitted by Nov. 20 to or

Additional information about the current status of the Green Line Extension can be found in the GLX Contract Presentation for MBTA Fiscal Management Control Board

Thank you for your support of the Green Line Extension project.

Frank DePaola
MBTA General Manager

Construction Info


MassDEP and MassDOT State Implementation Plan Public Meeting
on the 2015 SIP Annual Report

Monday, November 16, 2015
1:PM – 7:00PM
Washington Street Conference Center
2nd Floor
MassDEP, One Winter Street, Boston, MA

* * *
For Language or Access Accommodations Contact:
Joseph Sgroi (617) 996-0771 or
at least one week in advance.


For all queries and comments related to the Green Line Extension project, please contact the project staff.

If you need project materials in alternative languages or formats, please submit your request here.

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