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Green Line Extension Medford Street Bridge Closure Map April 2019The City of Somerville will close Medford Street in the vicinity of Gilman Square behind Somerville High School in order to further advance construction of the Somerville High School (SHS) Project. This closure will also benefit the construction efforts already underway for the MBTA’s Green Line Extension (GLX) Project. The closure will commence on Friday, May 17, 2019, and remain closed through the spring of 2020.

Following the work by the SHS Project this spring and summer, the closure will provide GLX access to modify the bridge and create a longer span with structural improvements to accommodate new Green Line tracks.

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

Recent schedules had projected the Medford Street Bridge would close in July 2019, but this new timeline was established after careful coordination between GLX and the SHS Project, which are progressing in close physical proximity to one another. Advancing the Medford Street Bridge closure by six weeks will provide critical logistical benefits for both projects.

To stay informed about construction, sign up to receive Somerville’s weekly email outlining upcoming construction citywide. Residents are also encouraged to enroll in the City’s alert system to ensure notification prior to major detours or disruptive construction activity.

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 info@glxinfo.com.

For more information about the Green Line Extension project, including construction schedules, fact sheets, and the latest station designs, visit the project website.

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