Medford St. Bridge Closure May 17

We’re a week away from the closure of the Medford St. bridge, in Gilman Square behind Somerville High School. the closure is expected to last from May 17 through the spring of 2020.

For the duration of this closure, all traffic will be detoured around the work zone via Pearl St. and McGrath Highway. Detour maps and directions are available on in the Bridge Closures section.

To stay informed about construction, sign up to receive a weekly email outlining upcoming construction citywide at Residents are also encouraged to enroll in the City’s alert system at to ensure they’re notified prior to major detours or disruptive construction activity in their neighborhood.

Anyone seeking assistance for an urgent Green Line construction-related matter should call the 24/7 GLX hotline at 1-855-GLX-INFO (459-4636) or email

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