Massachusetts Route 28 runs north and south through Somerville, separating East Somerville from the rest of the city. Rte. 28 is called "McGrath Highway" from Cambridge to Interstate 93, and it is called the "Fellsway" north of I-93 and on into Medford.
Interstate 93 runs northwest and southeast through Somerville, separating Ten Hills and Assembly Square from the rest of the city. This massive highway is elevated for almost its entire length through Somerville and runs directly alongside and/or above Mystic Avenue (Massachusetts Route 38).
A 1907 postcard of Somerville Highlands Station. Route of the Green Line Extension RailAt present, rail transit serves periphery points of Somerville: to the northwest, Davis Square on the Red Line and to the southeast, Sullivan Square on the Orange Line at the border with Charlestown, providing easy access to Harvard Square and to downtown Boston. Porter Square (just over the Cambridge border) also has Red Line service and an MBTA Commuter Rail station, providing access to Boston's North Station and to locations westward on the Fitchburg Line.
Massachusetts state officials have agreed, both in court settlements and legislation, to extend the Green line rapid transit system through Somerville. This would bring rail transit service to the core sections of Somerville. This commitment was made, in part, to offset the additional burdens in traffic and pollution within the city due to completion of the Big Dig infrastructure. The Green Line Extension would be built along existing commuter rail rights-of-way, and would extend service to much of central Somerville, to Tufts University and surrounding areas of Medford, and (along a separate spur) to Union Square. Controversy has surrounded the repeated delays by the state in providing funding for the project, most recently when Governor Deval Patrick decided to delay work an additional two years in order to seek up to $300 million in federal financing for the project. This decision makes it unlikely that the previous completion date of 2014 will be met.
In April 2008, Governor Deval Patrick signed into law a $3.5 billion transportation bond bill that includes the $600 million necessary to fund the Green Line extension.
A new Orange Line station is under construction near the Assembly Square Mall in eastern Somerville, between the existing Sullivan and Wellington stations.
BusThe city is served by buses that connect to these subway stations:
Orange Line stations: Sullivan Square in Charlestown Wellington in Medford Malden in Malden Red Line stations: Davis Square in Somerville Kendall, Central, Harvard, and Porter in Cambridge Green Line stations: Lechmere in East Cambridge Cleveland Circle and Reservoir, at the Brighton/Brookline line