The MBTA Commuter Rail Maintenance Facility is the primary train maintenance repair facility for the MBTA Commuter Rail system. It is located in the Inner Belt area of Somerville, Massachusetts, near North Station in Boston. The present Commuter Rail Maintenance Facility was built in 1995, replacing the Boston Engine Terminal which was built by the former Boston and Maine Railroad.Three small platforms on asphalt crossings serve as flag stops for MBTA employees only. One platform serves the Fitchburg Line, another the Lowell Line, and a third the Haverhill Line and Newburyport/Rockport Line .It has been viewed as a possible location for a light rail maintenance facility for the under-construction Green Line Extension.<ref name="MBTA/DOT">
