Bridges at School St., Medford St., Ball Sq. to undergo construction to make way for new Green Line stops. Intermittent lane, sidewalk closures may apply.

SOMERVILLE – The Green Line is coming! The Green Line is coming! Beginning in January 2015, necessary repair work will begin at rail bridges throughout the City to make way for the impending Green Line Extension project (GLX), which will bring six new rail stops to Somerville.

Starting on Jan. 19 and continuing through May 2015, construction on the Broadway Bridge in Ball Sq. will require the closure of the southbound vehicle and bicycle travel lane as well as the sidewalk for pedestrians in order to construct a temporary utility bridge. Two-way vehicle travel will still be accommodated, in narrower lanes, during this time and all users are advised to use caution and to follow posted signage and detours, particularly during high travel times in the morning and evening.

Work is already underway in Union Sq. for the spur stop and full Green Line station to be constructed on Prospect St. near the intersection with Somerville Ave. Additional work sites will include the School St. Bridge, the Medford St. Bridge in Gilman Sq., and the Broadway Bridge in Ball Sq. near the intersection with Boston Ave.

A full schedule including work dates, potential impacts, and other information can always be found at, or by calling 311. Residents and businesses in these areas will be notified if and when street closures or other disruptions may be expected. To sign up for City alerts, visit

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