Connecticut Roads - Connecticut Highways Map

Find Connecticut Interstates and Federal Highways


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History of Interstates and U.S. Highways in Connecticut

Connecticut's highway system has been integral to connecting the state with the larger New England and Mid-Atlantic regions. The state’s highway history dates back to the early 20th century when U.S. Routes like U.S. 1 and U.S. 5 became vital travel corridors. The construction of the Interstate Highway System in the 1950s and 1960s brought the development of I-95, I-84, and I-91, which serve as Connecticut’s major transportation routes today.

Connecticut’s highways handle significant traffic volumes, particularly in the densely populated coastal regions. I-95, which runs along the coast and connects major cities like New Haven and Stamford, is one of the busiest highways in the country, seeing over 150,000 vehicles per day in some sections. These highways are critical not only for passenger travel but also for the transportation of goods, especially along the I-95 corridor, which connects the Northeast to the Mid-Atlantic region.

In recent years, Connecticut has invested in several major highway improvement projects aimed at reducing congestion and improving safety. Projects include widening portions of I-95 and I-84, upgrading interchanges, and improving public transit infrastructure to reduce the overall traffic burden. Future highway expansion projects are in the works to support the state’s growing population and increasing transportation needs.

Busiest and Longest Federal Interstates and U.S. Highways in Connecticut

Interstate or Highway Length (mi) Length (km) Southern or Western Terminus Northern or Eastern Terminus Created
I-95 112 180 New York Border Rhode Island Border 1957
I-84 97 156 New York Border Massachusetts Border 1960
I-91 58 93 New Haven, CT Massachusetts Border 1960
I-395 54 87 Waterford, CT Massachusetts Border 1983
U.S. 1 117 188 New York Border Rhode Island Border 1926
U.S. 5 54 87 New Haven, CT Massachusetts Border 1926
U.S. 6 116 187 New York Border Rhode Island Border 1926
U.S. 7 78 126 Norwalk, CT Massachusetts Border 1926
U.S. 44 106 171 New York Border Rhode Island Border 1926
U.S. 202 75 121 New York Border Massachusetts Border 1926
U.S. 302 16 26 Newtown, CT Massachusetts Border 1926
I-291 6 10 Windsor, CT East Hartford, CT 1994

Connecticut Designated Highways



Connecticut Interstate Highway 84, I-84 E
Connecticut Interstate Highway 84, I-84 W
Connecticut Interstate Highway 84, Yankee Expy E
Connecticut Interstate Highway 84, Yankee Expy W
Connecticut Interstate Highway 91, I-91 N
Connecticut Interstate Highway 91, I-91 S
Connecticut Interstate Highway 91, Killingworth Rd
Connecticut Interstate Highway 91, State Hwy 91
Connecticut Interstate Highway 95, Governor John Davis Lodge Tpke N
Connecticut Interstate Highway 95, Governor John Davis Lodge Tpke S
Connecticut Interstate Highway 95, I-95 N
Connecticut Interstate Highway 95, I-95 S
Connecticut Interstate Highway 291, I-291 E
Connecticut Interstate Highway 291, I-291 W
Connecticut Interstate Highway 384, I-384 E
Connecticut Interstate Highway 384, I-384 W
Connecticut Interstate Highway 395, I-395 N
Connecticut Interstate Highway 395, I-395 S
Connecticut Interstate Highway 684, I-684 N
Connecticut Interstate Highway 684, I-684 S
Connecticut Interstate Highway 691, I-691 E
Connecticut Interstate Highway 691, I-691 W
Connecticut US Highway 1, Bank St
Connecticut US Highway 1, Barnum Ave
Connecticut US Highway 1, Barnum Avenue Cutoff
Connecticut US Highway 1, Belden Ave
Connecticut US Highway 1, Boston Ave
Connecticut US Highway 1, Boston Post Rd
Connecticut US Highway 1, Bridgeport Ave
Connecticut US Highway 1, Broadway Ave
Connecticut US Highway 1, Church St S
Connecticut US Highway 1, Colman St
Connecticut US Highway 1, Columbus Ave
Connecticut US Highway 1, Congress Ave
Connecticut US Highway 1, Connecticut Ave
Connecticut US Highway 1, Cross St
Connecticut US Highway 1, E Main St
Connecticut US Highway 1, E Putnam Ave
Connecticut US Highway 1, Ferry Blvd
Connecticut US Highway 1, Forbes Ave
Connecticut US Highway 1, Fort Hill Rd
Connecticut US Highway 1, Frontage Rd
Connecticut US Highway 1, Halls Rd
Connecticut US Highway 1, Jefferson Ave
Connecticut US Highway 1, Kings Highway Cutoff
Connecticut US Highway 1, Kings Hwy E
Connecticut US Highway 1, Long Hill Rd
Connecticut US Highway 1, Lyme St
Connecticut US Highway 1, Main St
Connecticut US Highway 1, N Frontage Rd
Connecticut US Highway 1, N Main St
Connecticut US Highway 1, Neck Rd
Connecticut US Highway 1, New London Rd
Connecticut US Highway 1, North Ave
Connecticut US Highway 1, Orange Ave
Connecticut US Highway 1, Poquonnock Rd
Connecticut US Highway 1, Post Rd
Connecticut US Highway 1, Post Rd E
Connecticut US Highway 1, Post Rd W
Connecticut US Highway 1, Roosevelt Ave
Connecticut US Highway 1, S Broad St
Connecticut US Highway 1, S Frontage Rd
Connecticut US Highway 1, Saltonstall Pkwy
Connecticut US Highway 1, State St
Connecticut US Highway 1, Stonington Rd
Connecticut US Highway 1, Tresser Blvd
Connecticut US Highway 1, Union Ave
Connecticut US Highway 1, US-1
Connecticut US Highway 1, Van Buren Ave
Connecticut US Highway 1, W Broad St
Connecticut US Highway 1, W Main St
Connecticut US Highway 1, W Putnam Ave
Connecticut US Highway 1, Water St
Connecticut US Highway 1, Westport Ave
Connecticut US Highway 1, Williams Ave
Connecticut US Highway 1A, Alpha Ave
Connecticut US Highway 1A, Elm St
Connecticut US Highway 1A, N Water St
Connecticut US Highway 1A, Trumbull Ave
Connecticut US Highway 5, Berlin Tpke
Connecticut US Highway 5, Broad St
Connecticut US Highway 5, Clintonville Rd
Connecticut US Highway 5, E River Drive Ext
Connecticut US Highway 5, Ellington Rd
Connecticut US Highway 5, Enfield St
Connecticut US Highway 5, John Fitch Blvd
Connecticut US Highway 5, King St
Connecticut US Highway 5, Main St
Connecticut US Highway 5, N Broad St
Connecticut US Highway 5, N Colony Rd
Connecticut US Highway 5, N Colony St
Connecticut US Highway 5, Prospect Hill Rd
Connecticut US Highway 5, S Broad St
Connecticut US Highway 5, S Colony Rd
Connecticut US Highway 5, S Colony St
Connecticut US Highway 5, S Main St
Connecticut US Highway 5, Silver Ln
Connecticut US Highway 5, State St
Connecticut US Highway 5, US-5
Connecticut US Highway 5, US-5 N
Connecticut US Highway 5, US-5 S
Connecticut US Highway 5, Washington Ave
Connecticut US Highway 5, Wilbur Cross Hwy
Connecticut US Highway 6, Boston Post Rd
Connecticut US Highway 6, Church Hill Rd
Connecticut US Highway 6, Colt Hwy
Connecticut US Highway 6, Cutler St
Connecticut US Highway 6, Deforest St
Connecticut US Highway 6, E Main St
Connecticut US Highway 6, Farmington Ave
Connecticut US Highway 6, Hampton Rd
Connecticut US Highway 6, Hartford Rd

Connecticut US Highway 6, Hartford Tpke
Connecticut US Highway 6, Hopriver Rd
Connecticut US Highway 6, Main St
Connecticut US Highway 6, Main St N
Connecticut US Highway 6, Main St S
Connecticut US Highway 6, Mount Pleasant Rd
Connecticut US Highway 6, Newtown Rd
Connecticut US Highway 6, North St
Connecticut US Highway 6, Pine Hill Rd
Connecticut US Highway 6, Providence Pike
Connecticut US Highway 6, Providence Rd
Connecticut US Highway 6, Providence Tpke
Connecticut US Highway 6, Scott Swamp Rd
Connecticut US Highway 6, Southford Rd
Connecticut US Highway 6, Stony Hill Rd
Connecticut US Highway 6, Terryville Ave
Connecticut US Highway 6, Thomaston Rd
Connecticut US Highway 6, US-6
Connecticut US Highway 6, US-6 E
Connecticut US Highway 6, US-6 W
Connecticut US Highway 6, W Main St
Connecticut US Highway 6, Waterbury Rd
Connecticut US Highway 6, Watertown Rd
Connecticut US Highway 6, Willimantic Rd
Connecticut US Highway 6, Willimantic Tpke
Connecticut US Highway 6, Woodbury Rd
Connecticut US Highway 7, Ashley Falls Rd
Connecticut US Highway 7, Cornwall Bridge Rd
Connecticut US Highway 7, Danbury Rd
Connecticut US Highway 7, Elm St
Connecticut US Highway 7, Ethan Allen Hwy
Connecticut US Highway 7, Grist Mill Rd
Connecticut US Highway 7, High St
Connecticut US Highway 7, Kent Cornwall Rd
Connecticut US Highway 7, Kent Rd
Connecticut US Highway 7, Kent Rd S
Connecticut US Highway 7, Main Ave
Connecticut US Highway 7, N Main St
Connecticut US Highway 7, Railroad St
Connecticut US Highway 7, S Main St
Connecticut US Highway 7, Sugar Hollow Rd
Connecticut US Highway 7, US-7
Connecticut US Highway 7, US-7 N
Connecticut US Highway 7, US-7 S
Connecticut US Highway 44, Albany Ave
Connecticut US Highway 44, Albany Tpke
Connecticut US Highway 44, Ashford Center Rd
Connecticut US Highway 44, Averill Rd
Connecticut US Highway 44, Avon Mountain Rd
Connecticut US Highway 44, Boston Tpke
Connecticut US Highway 44, Boston Way
Connecticut US Highway 44, Burnside Ave
Connecticut US Highway 44, Canaan Rd
Connecticut US Highway 44, Center St
Connecticut US Highway 44, Church St
Connecticut US Highway 44, Connecticut Blvd
Connecticut US Highway 44, E Canaan Rd
Connecticut US Highway 44, E Center St
Connecticut US Highway 44, E Main St
Connecticut US Highway 44, Front St
Connecticut US Highway 44, Greenwoods Rd E
Connecticut US Highway 44, Greenwoods Rd W
Connecticut US Highway 44, Hartford Tpke
Connecticut US Highway 44, Main St
Connecticut US Highway 44, Mashamoquet Rd
Connecticut US Highway 44, Middle Tpke
Connecticut US Highway 44, Middle Tpke E
Connecticut US Highway 44, Middle Tpke W
Connecticut US Highway 44, Millerton Rd
Connecticut US Highway 44, Morgan St
Connecticut US Highway 44, Morgan St S
Connecticut US Highway 44, New Bolton Rd
Connecticut US Highway 44, New Hartford Rd
Connecticut US Highway 44, Norfolk Rd
Connecticut US Highway 44, Pomfret Rd
Connecticut US Highway 44, Pomfret St
Connecticut US Highway 44, Pompey Hollow Rd
Connecticut US Highway 44, Providence Pike
Connecticut US Highway 44, Putnam Rd
Connecticut US Highway 44, S Main St
Connecticut US Highway 44, Salisbury Rd
Connecticut US Highway 44, School St
Connecticut US Highway 44, Squaw Hollow Rd
Connecticut US Highway 44, US-44
Connecticut US Highway 44, W Main St
Connecticut US Highway 44, Winsted Norfolk Rd
Connecticut US Highway 202, Albany Tpke
Connecticut US Highway 202, Bantam Rd
Connecticut US Highway 202, Bridge St
Connecticut US Highway 202, Danbury Rd
Connecticut US Highway 202, E Main St
Connecticut US Highway 202, East St
Connecticut US Highway 202, Federal Rd
Connecticut US Highway 202, Hopmeadow St
Connecticut US Highway 202, Lake Avenue Ext
Connecticut US Highway 202, Litchfield Rd
Connecticut US Highway 202, Litchfield St
Connecticut US Highway 202, Litchfield Tpke
Connecticut US Highway 202, Main St
Connecticut US Highway 202, Mill Plain Rd
Connecticut US Highway 202, New Litchfield St
Connecticut US Highway 202, New Milford Tpke
Connecticut US Highway 202, Park Lane Rd
Connecticut US Highway 202, Poplar St
Connecticut US Highway 202, S Main St
Connecticut US Highway 202, Salmon Brook St
Connecticut US Highway 202, Simsbury Rd
Connecticut US Highway 202, Torrington Rd
Connecticut US Highway 202, W Main St
Connecticut US Highway 202, West St
Connecticut US Highway 202, White Turkey Rd