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Beginning March 22, 2019, three major bridges in Somerville, MA will be closed to facilitate construction of the MBTA Green Line Extension (GLX) project. Traffic detours will affect local and regional commutes through Medford, Somerville, Cambridge, and Boston. Motorists, pedestrians, and bicyclists should plan accordingly and may want to seek alternate routes.
Bridge Closure Schedules:
Broadway Bridge at Ball Square on the Somerville / Medford border
- Closed March 22, 2019 to March 2020
Washington Street Bridge (Underpass) in East Somerville
- Closed April 2019 to Fall 2019 and Spring 2020 to Fall 2020
Medford Street Bridge at Gilman Square in Somerville
- Closed July 2019 to Spring 2020
For further details on bridge closures, including directions and helpful area maps, please visit www.mass.gov/green-line-extension-project-glx.
The closures of the Broadway and Medford Street Bridges are necessary in order to accommodate the construction of new Green Line light-rail tracks. Currently, these bridges are only wide enough to accommodate the existing commuter rail service that operates beneath them. The Washington St. Bridge requires a complete reconstruction of abutments and structural span in order to accommodate the addition of new light-rail transit service and the Community Path.
For urgent matters relating to GLX construction work please use our 24/7 Construction Hotline - (855) GLX-INFO (459-4636).
For all other Green Line Extension inquiries please contact the project at firstname.lastname@example.org.