The Fitchburg Cutoff was a rail line running 2.8 miles from Brighton Street in Belmont, Massachusetts, to Somerville Junction in Somerville, Massachusetts. It was constructed in two segments in 1870 and 1881 to connect the Lexington Branch and Central Massachusetts Railroad to the Boston and Lowell Railroad. Passenger service lasted until 1927. Freight service ended in 1979–80 to allow construction of the Red Line Northwest Extension; the line was abandoned in three sections in 1979, 1983, and 2007.
All of the right-of-way, except a short section near Alewife station, has been reused for three connecting rail trails: the Fitchburg Cutoff Path from Brighton Street to Alewife station, the Alewife Linear Park from Alewife to Massachusetts Avenue, and the Somerville Community Path east of Massachusetts Avenue. The paths are part of the Mass Central Rail Trail.
Wikipedia https://en.wikipedia.org/wiki/Fitchburg_Cutoff
Address 4 Cedar St, Cambridge 02140, United States
Coordinates 42°23'51.961" N -71°7'51.38" E