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

The GLX Project regularly gives updates to the MassDOT Board of Directors and the MBTA Fiscal & Management Control Board (FMCB). To view the GLX presentation materials shared with these boards please visit the Fiscal and Management Control Board page of the MBTA website.

January 30, 2018
Pre-construction Activity Notice

Upcoming Work - GLX Constructors, the design-build entity for the MBTA Green Line Extension Project, is planning to begin pre-construction activities in advance of excavation work that is scheduled for Spring of 2018.

Please view our Construction Updates page for more detailed information on this phase of the GLX project

January 2, 2018

On December 22, 2017, the Executive Office of Energy & Environmental issued a certificate on the Notice of Project Change for the potential extension of the Green Line to Mystic Valley Parkway. This certificate lays out the scope of work that the MBTA will need to fulfill when it prepares the Environmental Impact Report for the project. A copy of the certificate can be found below:

December 21, 2017
Exciting GLX News

Notice to Proceed Issued to the GLX Design-Build Entity! For more information click on the following links.


GLX Community Working Group (CWG)
Tuesday, February 27, 2018
4:00 to 5:30 PM
GLX Office
200 Innerbelt Road, 3rd Floor
Somerville, MA 02143

GLX Public Meeting
Wednesday, March 7, 2018
6:30 - 8:00 PM PM
Somerville High School Auditorium
81 Highland Avenue
Somerville, MA 02143

* * *
For Language or Access Accommodations Contact:
1-855-GLX-INFO (459-4636) or
at least one week in advance.
Construction Info

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.

email updates

Interested in keeping in touch with this project? Sign up for Green Line Extension project updates.

Twitter MassDOT Blog
Flicker MassDOT Social Media
You Tube MassDOT Developers Resources
Translation Disabled  | Translation Support
Home | About Us | Employment | Contact Us | Site Policies Copyright © 2016 Commonwealth of Massachusetts