I-91

About I-91

From New Haven, CT (I-95) to Derby Line, VT (Canada border)

Interstate 91 is a route running about 290 miles from New Haven, Connecticut, north through Massachusetts and Vermont to the Canadian border. It begins at Interstate 95 on the Connecticut coast and follows the Connecticut River valley north through Hartford, Springfield, and the Pioneer Valley of western Massachusetts. It continues up the river through Vermont, serving Brattleboro and White River Junction, before reaching the border at Derby Line.

For much of its length the highway parallels the Connecticut River, threading through a corridor of valley cities and farmland that has carried travel for centuries. In Connecticut and Massachusetts it links the urban centers of Hartford and Springfield, while in Vermont it serves a more rural string of communities along the river before turning toward the northern uplands near St. Johnsbury.

The route is a primary north-south corridor for inland New England, connecting the coast at New Haven with the interior valley cities and continuing into Quebec as Autoroute 55. It carries regional commuter traffic in its southern reaches and longer-distance travel through the rural Vermont sections.

State-by-state mileage

State	Miles
Connecticut	58.0
Massachusetts	54.9
Vermont	177.4
Total	290.3

History

Interstate 91 was designated in 1957 under the new federal program and built in segments over the following years through the three states it crosses. Its construction through Springfield in the 1960s reshaped the urban riverfront and separated parts of the city from the Connecticut River.

The route was assembled into a continuous freeway up the Connecticut River valley, connecting at its north end to the Quebec highway system across the border.

Major cities and places

Did you know

• The southern terminus is at I-95 in New Haven and the northern terminus is at the Canadian border at Derby Line, Vermont.
• It crosses Connecticut, Massachusetts, and Vermont.
• It closely follows the Connecticut River valley for much of its length.
• It continues into Canada as Quebec Autoroute 55.