Green Line Extension (GLX) Update: School St. Bridge to Reopen Sunday, April 5


The School St. bridge closure currently in effect will be extended by one week to advance Green Line Extension (GLX) construction. The bridge is now expected to reopen to vehicular traffic Sunday, April 5. The next closure is planned for April 17 – 26. The School St. pedestrian bridge between Medford St. and Highland Ave. will remain open for pedestrians and cyclists during these short-term closures.

The GLX is a State project and therefore not subject to Somerville’s suspension of non-essential construction during the COVID-19 public health emergency. MassDOT has issued updated guidelines for its construction sites and workers.

Detour maps and directions are available at in the Bridge Closures & Detours section. These detours will be modified slightly prior to the full-time School St. bridge closure in May. Further information will be provided closer to that date.

For additional information about the Green Line Extension, visit

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