I-91 Traffic Cameras: Complete Interstate 91 Guide — CT to VT

Interstate 91 spans 290 miles from New Haven, Connecticut to the Canadian border at Derby Line, Vermont per Wikipedia's I-91 entry. The route follows the Connecticut River valley through New Haven, Hartford, Springfield, Brattleboro, White River Junction, and St. Johnsbury — connecting southern New England's population centers to Vermont's Northeast Kingdom and ultimately Quebec Autoroute 55 at the Canadian border. Vermont's 177-mile segment accounts for over 60% of I-91's total length. Per CTDOT, MassDOT, and VTrans, camera coverage spans all three states plus 511NY / 511CT / Mass511 / Vermont 511 state information systems.

I-91 Route Overview

I-91 traverses 3 states: Connecticut (58 mi), Massachusetts (55 mi), and Vermont (177 mi — longest). The route begins at I-95 in New Haven, runs north through Meriden, Hartford (I-84 junction — the largest urban interchange on I-91), across the Massachusetts line through Springfield and Holyoke, past the Vermont line at Brattleboro, through White River Junction (I-89 junction), past St. Johnsbury, and terminates at the Canadian border at Derby Line, Vermont.

Key I-91 Corridors and Bottlenecks

State-by-State Camera Coverage

Connecticut (58 miles) — CTDOT and CT 511. New Haven, Meriden, Wethersfield, Hartford, Windsor coverage. See Connecticut traffic cameras guide.

Massachusetts (55 miles) — MassDOT and Mass511. Longmeadow, Springfield, Holyoke, Northampton, Greenfield coverage. See Massachusetts traffic cameras guide.

Vermont (177 miles — longest state segment) — VTrans and Vermont 511. Brattleboro, Bellows Falls, Windsor, White River Junction, Barnet, St. Johnsbury, Lyndonville, Derby Line coverage. See Vermont traffic cameras guide.

Winter Weather on I-91

I-91 through Vermont faces significant winter weather risk — heavy lake-effect snow influence through the Connecticut River valley, ice storms, and extended subzero cold. Vermont's Northeast Kingdom segment from St. Johnsbury to Derby Line can see extreme conditions. Per VTrans, winter I-91 closures and low-visibility delays are common from November through April. For comprehensive winter monitoring, see the Winter Storm Season traffic cameras guide.

Major Events Affecting I-91

• Yale Bowl games (New Haven) — I-91 south compounding
• UConn sports (indirect from Hartford) — I-91 / I-84 compounding
• Springfield Thunderbirds hockey + Mass Mutual Center events
• Dartmouth College (White River Junction via I-89) — fall sports and move-in traffic
• Vermont fall foliage (October) — heavy tourist traffic Brattleboro to Derby Line
• Vermont ski resorts — Okemo, Killington, Stowe, Burke via I-91 offshoots
• Cross-border Canadian Quebec traffic — I-91 feeds Sherbrooke and Montreal