Memorial Drive, Gerry's Landing Road, Fresh Pond Parkway, Concord Avenue, Alewife Brook Parkway, Massachusetts Avenue, Mystic Street, Cambridge Street, Cambridge Road

Direction:
North/South
Southern Terminus:
Longfellow Bridge (MA 3) in Cambridge
Northern Terminus:
Massachusetts-New Hampshire state line
Distance:
35.51 miles
Counties:
Middlesex
Signed:
Yes

US 3 is a north/south route in Massachusetts and New Hampshire. It begins at the Longfellow Bridge (MA 3) in Cambridge. The first section is Memorial Drive, a highway along the Charles River through Cambridge with a combination of traffic lights and grade-separated interchanges. Memorial Drive ends at Gerry's Landing Road. From this point, US 3 is routed along local streets to the north until it reaches I-95. It is multiplexed along I-95 for a short distance. It then splits off and runs north as an expressway to the Massachusetts-New Hampshire state line.

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