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Green Line Extension Project (GLX)

The Green Line Extension (GLX) project will extend the existing MBTA Green Line service north of Lechmere Station and into the communities of Somerville, Cambridge, and Medford.

The project involves construction of 6 new Green Line stations along 2 branches (the Medford Branch and Union Square Branch) along with the relocation and reconstruction of Lechmere Station.

The project will significantly reduce vehicle trips and related air emissions while increasing access to fast and reliable public transit service in historically underserved areas. The project is expected to support increased ridership of more than 50,000 passenger trips per day once completed.

What you need to know

About the Green Line Extension Project  GLX construction activities and traffic updates  GLX public meetings & documents  2021 GLX community working group meeting materials  Bridge Closures - GLX Project  Lechmere Viaduct and Charles River Dam Road 
See all 8 of Green Line Extension Project (GLX) 

Contact Information

Address

200 Inner Belt Road, Somerville, MA 02143
Directions 

Phone

MBTA Customer Support (617) 222-3200

Mon-Fri (6:30am-8pm) and Sat & Sun (8am-4pm)

TTY (617) 222-5146

Mon-Fri (6:30am-8pm) and Sat & Sun (8am-4pm)

Online

Green Line Extension inquiries info@glxinfo.com
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Upcoming Events

No upcoming events scheduled
See past events for the Green Line Extension Project (GLX)

More Information

Additional Resources

MBTA Fiscal and Management Control Board
Image credits:  MassDOT
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