Note: This listing include only routes in Fairfield, New Haven, Middlesex, and Hartford counties. Routes located entirely within other counties are excluded from this listing.
 | West Putnam Avenue, East Putnam Avenue, West Main Street, Tresser Boulevard, East Main Street, Boston Post Road, Connecticut Avenue, Van Buren Avenue, Belden Avenue, Cross Street, North Avenue, Westport Avenue, Post Road West, Post Road East, Post Road, Kings Highway, Boston Avenue, Barnum Avenue, Bridgeport Avenue, Orange Avenue, Columbus Avenue, Church Street South, Union Avenue, Water Street, Forbes Avenue, Saltonstall Parkway, Halls Road, Bank Street, Jefferson Avenue, Colman Street, South Frontage Road, Long Hill Road, Poquonnock Road, Fort Hill Road, New London Road, Broadway, Roosevelt Street, Williams Avenue, Stonington Road, South Broad Street, West Broad Street |
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Direction: North/South Southern Terminus: Connecticut-New York border Northern Terminus: Connecticut-Rhode Island border Distance: 117.37 miles Counties: Fairfield, New Haven, Middlesex, New London Signed: Yes | |
 | Washington Street, Chelsea Harbor Drive, Water Street, East Main Street, Stonington Road, Norwich-Westerly Road, Liberty Street |
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Direction: East/West Western Terminus: Columbus Boulevard in Hartford Eastern Terminus: West Broad Street (US 1) in Stonington Distance: 58.03 miles Counties: Hartford, New London Signed: Yes | |
 | Newfield Street, Shunpike Road, Cromwell Avenue, Maple Street |
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Direction: North/South Southern Terminus: Washington Street (CT 66) in Middletown Northern Terminus: CT 2 in East Hartford Distance: 14.48 miles Counties: Middlesex, Hartford Signed: Yes | |
 | Cornwall Bridge Road, Furnace Brook Road, Cemetery Hill Road, Bunker Hill Road, Sharon Turnpike, Torrington Road, Goshen Road, Migeon Avenue, East Elm Street, East Main Street, New Harwinton Road, Birge Park Road, Litchfield Road, Burlington Road, Spielman Highway, Canton Road, Collinsville Road, Main Street, Farmington Avenue |
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Direction: East/West Western Terminus: South Main Street (CT 41) in Sharon Eastern Terminus: Boulevard and Old Mill Lane in West Hartford Distance: 46.72 miles Counties: Litchfield, Hartford Signed: Yes | |
 | State Street, Washington Avenue, South Colony Road, North Colony Road, Broad Street, Berlin Turnpike, Wilbur Cross Highway, Main Street, King Street, Ellington Road, John Fitch Boulevard, South Main Street, Prospect Hill Road, Enfield Street |
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Direction: North/South Southern Terminus: I-91 in New Haven Northern Terminus: Connecticut-Massachusetts border Distance: 54.59 miles Counties: New Haven, Hartford Signed: Yes | |
 | Mill Plain Road, Lake Avenue Extension, Newtown Road, Stony Hill Road, Mount Pleasant Road, Main Street, Church Hill Road, Main Street North, Main Street South, Woodbury Road, Cutler Street, Thomaston Road, Watertown Road, East Main Street, Terryville Avenue, North Street, Farmington Avenue, Scott Swamp Road, Colt Highway, Middle Turnpike West, Center Street, East Center Street, Middle Turnpike East, New Bolton Road, Boston Turnpike, Hopriver Road, Willimantic Turnpike, Jonathan Trumbull Highway, Willimantic Road, Boston Post Road, Hampton Road, Hartford Turnpike, Providence Turnpike, Hartford Road, Providence Road, Providence Pike |
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Direction: East/West Western Terminus: Connecticut-New York border Eastern Terminus: Connecticut-Rhode Island border Distance: 116.33 miles Counties: Fairfield, New Haven, Litchfield, Hartford, Tolland, Windham Signed: Yes | |
 | Grist Mill Road, Main Avenue, Danbury Road, Ethan Allen Highway, Federal Road, Kent Road, South Main Street, North Main Street, Kent-Cornwall Road, Cornwall Bridge Road, Sharon Canaan Road, Lime Rock Road, South Canaan Road, Elm Street, Railroad Street, Ashley Falls Road |
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Direction: North/South Southern Terminus: Connecticut Turnpike (I-95) in Norwalk Northern Terminus: Connecticut-Massachusetts border Distance: 78.22 miles Counties: Fairfield, Litchfield Signed: Yes | |
 | Park Place East, North Main Street, Colebrook River Road |
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Direction: North/South Southern Terminus: Connecticut Turnpike (I-95) in Bridgeport Northern Terminus: Connecticut-Massachusetts border Distance: 67.34 miles Counties: Fairfield, New Haven, Litchfield Signed: Yes | |
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Direction: North/South Southern Terminus: Connecticut Turnpike (I-95/US 1) in Old Saybrook Northern Terminus: Yankee Expressway (I-84) in West Hartford Distance: 40.89 miles Counties: Middlesex, Hartford Signed: Yes | |
 | Ella T. Grasso Boulevard, Whalley Avenue, Fitch Street, Arch Street, Dixwell Avenue, Whitney Avenue, Main Street, Highland Avenue, Cheshire Road, Norton Street, Queen Street, East Street, Farmington Avenue, Waterville Road, Simsbury Road, Hopmeadow Street, Salmon Brook Street |
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Direction: North/South Southern Terminus: Connecticut Turnpike (I-95) in New Haven Northern Terminus: Connecticut-Massachusetts border Distance: 54.28 miles Counties: New Haven, Hartford Signed: Yes | |
 | Merritt Parkway, Wilbur Cross Parkway, Berlin Turnpike, Wilbur Cross Highway |
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Direction: North/South Southern Terminus: Hutchinson Parkway and King Street (NY 120A) at the New York-Connecticut border Northern Terminus: Yankee Expressway (I-84) in East Hartford Distance: 83.53 miles Counties: Fairfield, New Haven, Hartford Signed: Yes | |
 | Middletown Avenue, Colchester Avenue, Middletown Road, Linwood Road, Main Street, Lebanon Avenue, Pease Road |
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Direction: East/West Western Terminus: West High Street (CT 66) in East Hampton Eastern Terminus: Exeter Road (CT 207) in Lebanon Distance: 17.05 miles Counties: Middlesex, New London Signed: Yes | |
 | Middletown Avenue, New Haven Road, Main Street, South Main Street, Hartford Avenue, Gospel Lane, Glastonbury Turnpike, Glastonbury Expressway |
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Direction: North/South Southern Terminus: I-91 and Foxon Boulevard (CT 80) in New Haven Northern Terminus: CT 2 in Glastonbury Distance: 36.33 miles Counties: New Haven, Middlesex, Hartford Signed: Yes | |
 | Main Street |
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Direction: North/South Southern Terminus: Main Street (CT 17/CT 66) and Marlborough Street (CT 17/CT 66) in Portland Northern Terminus: Gospel Lane (CT 17) and Glastonbury Turnpike (CT 17) in Portland Distance: 3.02 miles Counties: Middlesex Signed: Yes | |
 | Riverton Road, Main Street, East River Road, Center Street, Morrison Hill Road, North Hollow Road, Granville Road, Hartland Boulevard, Hartland Road, West Granby Road, North Granby Road, East Granby Road, Turkey Hills Road, Rainbow Road, Bradley Airport Connector |
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Direction: East/West Western Terminus: Colebrook River Road (CT 8) in Winchester Eastern Terminus: I-91 in Windsor Distance: 31.56 miles Counties: Litchfield, Hartford Signed: Yes | |
 | Ives Street, Broadway, Davis Road, Ridge Road, Bishop Street, Clintonville Road, Forest Road, Foxon Road, Notch Hill Road |
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Direction: East/West Western Terminus: Whitney Avenue (CT 10) in Hamden Eastern Terminus: Boston Post Road (US 1) in Guilford Distance: 14.07 miles Counties: New Haven Signed: Yes | |
 | Newtown Turnpike, Main Street, Mount Pleasant Road, Hawleyville Road, Whisconier Road |
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Direction: North/South Southern Terminus: Connecticut Turnpike (I-95) in Bridgeport Northern Terminus: Federal Road (US 7) in Brookfield Distance: 28.59 miles Counties: Fairfield Signed: Yes | |
 | Ellington Road, Oakland Road, Deming Street, Tolland Turnpike, Hartford Turnpike, Hyde Avenue, Tolland Stage Road, Crystal Lake Road, Stafford Road |
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Direction: East/West Western Terminus: John Fitch Boulevard (US 5) in South Windsor Eastern Terminus: West Stafford Road (CT 190) in Stafford Distance: 20.94 miles Counties: Hartford, Tolland Signed: Yes | |
 | Saugatuck Avenue, Riverside Avenue, Wilton Road, Westport Road, Ridgefield Road, Wilton Road West |
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Direction: North/South Southern Terminus: Saugatuck Avenue (CT 136) in Westport Northern Terminus: Main Street (CT 35) in Ridgefield Distance: 14.41 miles Counties: Fairfield Signed: Yes | |
 | Berkshire Road, Roosevelt Drive, Main Street, New Haven Avenue, Derby Turnpike, Derby Avenue, Ella T. Grasso Boulevard, Legion Avenue, North Frontage Road, South Frontage Road, Oak Street Connector |
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Direction: East/West Western Terminus: Yankee Expressway (I-84/US 6) in Newtown Eastern Terminus: Connecticut Turnpike (I-95) and I-91 in New Haven Distance: 24.37 miles Counties: Fairfield, New Haven Signed: Yes | |
 | South Salem Road, West Lane, Main Street, Danbury Road |
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Direction: North/South Southern Terminus: Connecticut-New York border Northern Terminus: Ethan Allen Highway (US 7) in Ridgefield Distance: 5.66 miles Counties: Fairfield Signed: Yes | |
 | North Street, Padanaram Road, Pembroke Road, Sherman-New Fairfield Road, Greenwoods Hill Road, Barnes Hill Road, Sherman Road |
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Direction: North/South Southern Terminus: Main Street (CT 53/CT 39) and Downs Street in Danbury Northern Terminus: Kent Road (US 7) in New Milford Distance: 18.66 miles Counties: Fairfield, Litchfield Signed: Yes | |
 | Main Street, Clapboard Ridge Road, Ball Pond Road, Brush Hill Road, Sherman Road, New Fairfield Road, Gaylordsville Road |
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Direction: North/South Southern Terminus: Downs Street, Main Street (CT 53), and North Street (CT 37) in Danbury Northern Terminus: CT 55 in Sherman Distance: 22.76 miles Counties: Fairfield Signed: Yes | |
 | Mount Carmel Connector |
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Direction: North/South Southern Terminus: I-91 in North Haven Northern Terminus: Whitney Avenue (CT 10) in Hamden Distance: 3.08 miles Counties: New Haven Signed: Yes | |
 | Chestnut Tree Hill Road, Pines Bridge Road, Old Turnpike Road, South Main Street, Bethany Road, Munson Road, Lasky Road, Beacon Road, Litchfield Turnpike, Cheshire Road, Mountain Road, Bethany Mountain Road, North Brooksvale Road |
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Direction: East/West Western Terminus: Oxford Road (CT 67) in Oxford Eastern Terminus: South Main Street (CT 10) in Cheshire Distance: 13.58 miles Counties: New Haven Signed: Yes | |
 | Millerton Road, Main Street, East Main Street, Canaan Road, Salisbury Road, Church Street, East Canaan Road, Greenwoods Road West, Greenwoods Road East, Winsted Road, Winsted-Norfolk Road, South Main Street, New Hartford Road, Albany Turnpike, Albany Avenue, West Main Street, Avon Mountain Road, Morgan Street, Connecticut Boulevard, Burnside Avenue, Middle Turnpike West, Boston Turnpike, Middle Turnpike, Squaw Hollow Road, Pompey Hollow Road, Ashford Center Road, Hartford Turnpike, Pomfret Road, Mashamoquet Road, Averill Road, Pomfret Street, Putnam Road, Front Street, School Street, Providence Pike |
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Direction: East/West Western Terminus: New York-Connecticut border Eastern Terminus: Connecticut-Rhode Island border Distance: 106.03 miles Counties: Litchfield, Hartford, Tolland, Windham Signed: Yes | |
 | East Avenue, Newtown Avenue, Chestnut Hill Road, Cedar Road, Norfield Road, Newtown Turnpike, Redding Road, Turkey Plain Road, Grassy Plain Street, South Street, Main Street |
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Direction: North/South Southern Terminus: North Avenue (US 1) in Norwalk Northern Terminus: North Street (CT 37), Main Street (CT 39), and Downs Street in Danbury Distance: 23.57 miles Counties: Fairfield Signed: Yes | |
 | Webatuck Road |
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Direction: East/West Western Terminus: Connecticut-New York border Eastern Terminus: Kent Road (US 7) in New Milford Distance: 2.64 miles Counties: Fairfield, Litchfield Signed: Yes | |
 | Kings Highway North, Canal Street, Main Street, Weston Road, Georgetown Road |
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Direction: North/South Southern Terminus: Wilton Road (CT 33) in Westport Northern Terminus: Norwalk-Danbury Road (US 7) in Wilton Distance: 9.51 miles Counties: Fairfield Signed: Yes | |
 | Tunxis Hill Road, Black Rock Turnpike, Black Rock Road, Putnam Park Road |
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Direction: North/South Southern Terminus: Kings Highway (US 1) in Fairfield Northern Terminus: Milwaukee Avenue (CT 302) in Bethel Distance: 18.58 miles Counites: Fairfield Signed: Yes | |
 | Brooklawn Avenue, Stratfield Road, Easton Turnpike, Sport Hill Road, Stepney Road |
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Direction: North/South Southern Terminus: North Avenue (US 1) in Bridgeport Northern Terminus: Main Street (CT 25) in Monroe Distance: 12.03 miles Counties: Fairfield Signed: Yes | |
 | Whalley Avenue, Amity Road, New Haven Road, South Main Street, Cherry Street, Meadow Street, Church Street, North Church Street, Straits Turnpike, Main Street, Litchfield Road, Watertown Road, South Plains Road, South Street, North Street, Goshen Road, Old Middle Street, Hollenbeck Road, Huntsville-South Canaan Road |
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Direction: North/South Southern Terminus: Whalley Avenue (CT 10) and Fitch Street (CT 10) in New Haven Northern Terminus: South Canaan Road (US 7) in Canaan Distance: 52.57 miles Counties: New Haven, Hartford, Litchfield Signed: Yes | |
 | Sherman Hill Road, Middlebury Road, Chase Parkway |
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Direction: East/West Western Terminus: Main Street (US 6) in Woodbury Eastern Terminus: Yankee Expressway (I-84) in Waterbury Distance: 8.14 miles Counties: Litchfield, New Haven Signed: Yes | |
 | Meriden Road, Washington Street, Main Street, Marlborough Street, Portland Road, Cobalt Road, West High Street, East High Street, East Hampton Road, Hebron Road, West Main Street, Middletown Road, Willimantic Road, Columbia Avenue, Boston Post Road |
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Direction: East/West Western Terminus: I-691 and I-91 in Meriden Eastern Terminus: Boston Post Road (US 6) in Windham Distance: 38.38 miles Counties: New Haven, Middlesex, Hartford, Tolland, Windham Signed: Yes | |
 | Bridge Street, Grove Street, Prospect Hill Road, New Milford Road West, New Milford Road East, Baker Road, North Street, Church Street, Southbury Road, Roxbury Road, Southford Road, Oxford Road, Bank Street, North Main Street, New Haven Road, Seymour Road |
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Direction: East/West Western Terminus: Kent Road (US 7), Danbury Road (US 7/US 202), and East Street (US 202) in New Milford Eastern Terminus: Amity Road (CT 63) in Woodbridge Distance: 31.00 miles Counties: Litchfield, New Haven Signed: Yes | |
 | Bridge Street, Prospect Street, Union City Road, Cheshire Road, Prospect Road, Yalesville Road, Church Street, Barnes Road, Durham Road, Wallingford Road |
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Direction: East/West Western Terminus: North Church Street (CT 63) in Naugatuck Eastern Terminus: Main Street (CT 17) in Durham Distance: 22.09 miles Counties: New Haven, Middlesex Signed: Yes | |
 | Whalley Avenue, Litchfield Turnpike, Carrington Road, Prospect Road, Hamilton Avenue, Silver Street, Meriden Road, Woodtick Road, Stillson Road, Wolcott Street, Wolcott Road, West Street, Burlington Avenue, Milford Street |
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Direction: North/South Southern Terminus: Amity Road (CT 63) in New Haven Northern Terminus: Spielman Highway (CT 4) in Burlington Distance: 35.16 miles Counties: New Haven, Hartford Signed: Yes | |
 | Waterbury Road, West Main Street, Main Street, Academy Road, South Meriden Road, River Road, Hanover Avenue |
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Direction: East/West Western Terminus: Yankee Expressway (I-84) in Cheshire Eastern Terminus: Old Colony Road (CT 71) in Meriden Distance: 10.92 miles Counties: New Haven Signed: Yes | |
 | Old Colony Road, South Broad Street, Main Street, Cook Avenue, West Main Street, Chamberlain Highway, High Road, Percival Avenue, New Britain Road, South Main Street, Franklin Square, Elm Street, Martin Luther King Drive, Stanley Street, Hartford Road, South East Road, New Britain Avenue |
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Direction: North/South Southern Terminus: North Colony Road (US 5) in Wallingford Northern Terminus: New Britain Avenue (CT 173) in West Hartford Distance: 19.19 miles Counties: New Haven, Hartford Signed: Yes | |
 | Chamberlain Highway, High Road, Kensington Avenue |
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Direction: North/South Southern Terminus: Chamberlain Highway (CT 71) in Berlin Northern Terminus: Buell Street in New Britain Distance: 2.92 miles Counties: Hartford Signed: Yes | |
 | Forestville Avenue, East Main Street, Broad Street, Middle Street, Riverside Avenue, Main Street, School Street, Divinity Street, Park Street, Terryville Road, South Riverside Avenue, North Riverside Avenue, Poland Brook Road |
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Direction: North/South Southern Terminus: CT 9 in New Britain Northern Terminus: Burlington Road (CT 4) in Harwinton Distance: 20.10 miles Counties: Hartford, Litchfield Signed: Yes | |
 | Main Street, Watertown Avenue |
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Direction: East/West Western Terminus: Straits Turnpike (CT 63) in Watertown Eastern Terminus: CT 8 in Waterbury Distance: 3.46 miles Counties: Litchfield, New Haven Signed: Yes | |
 | Ellington Road, Wapping Wood Road, Windsorville Road, Union Street, East Main Street, Tolland Avenue, Tolland Stage Road, Tolland Turnpike, Nott Highway |
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Direction: East/West Western Terminus: Sullivan Avenue (CT 194) in South Windsor Eastern Terminus: Squaw Hollow Road (US 44) in Ashford Distance: 22.21 miles Counties: Hartford, Tolland, Windham Signed: Yes | |
 | Poquonock Avenue, Ella T. Grasso Turnpike, South Street, South Main Street, North Main Street, North Street |
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Direction: North/South Southern Terminus: Broad Street (CT 159) in Windsor Northern Terminus: Connecticut-Massachusetts border Distance: 13.52 miles Counties: Hartford Signed: Yes | |
 | Whitfield Street, Broad Street, Church Street, Durham Road, Guilford Road |
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Direction: North/South Southern Terminus: Whitfield Street (CT 146) and Boston Street (CT 146) in Guilford Northern Terminus: New Haven Road (CT 17) in Durham Distance: 13.85 miles Counties: New Haven, Middlesex Signed: Yes | |
 | Durham Road, Madison Road |
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Direction: North/South Southern Terminus: Boston Post Road (US 1) in Madison Northern Terminus: Main Street (CT 17) in Durham Distance: 14.34 miles Counties: New Haven, Middlesex Signed: Yes | |
 | Foxon Boulevard, Foxon Road, Branford Road, Killingworth Road, Old Toll Road, North Branford Road, Deep River Road, Winthrop Road, Elm Street |
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Direction: East/West Western Terminus: I-91 and Middletown Avenue (CT 17) in New Haven Eastern Terminus: Main Street (CT 154) in Deep River Distance: 25.91 miles Counties: New Haven, Middlesex Signed: Yes | |
 | Hull Street, Central Avenue, High Street, Killingworth Turnpike, Clinton Road, Higganum Road, Killingworth Road |
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Direction: North/South Southern Terminus: West Main Street (US 1) in Clinton Northern Terminus: Saybrook Road (CT 154) in Haddam Distance: 15.75 miles Counties: Middlesex Signed: Yes | |
 | Bridge Road, Norwich Road, Town Street, Norwich-Salem Road, East Haddam Road, Norwich-Salem Turnpike, Salem Turnpike, West Main Street |
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Direction: East/West Western Terminus: CT 9 in Chester Eastern Terminus: Chelsea Harbor Drive (CT 2) in Norwich Distance: 28.47 miles Counties: Middlesex, New London Signed: Yes | |
 | Manchester Road, South Main Street, Main Street, North Main Street, Oakland Street, Talcottville Road, Windsor Avenue, Union Street, West Street, West Road, Somers Road, South Road, Springfield Road |
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Direction: North/South Southern Terminus: New London Turnpike in Glastonbury Northern Terminus: Connecticut-Massachusetts border Distance: 27.56 miles Counties: Hartford, Tolland Signed: Yes | |
 | Hebron Avenue, Gilead Street |
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Direction: East/West Western Terminus: CT 2 in Glastonbury Eastern Terminus: North Street (CT 85) in Hebron Distance: 9.33 miles Counties: Hartford, Tolland Signed: Yes | |
 | Main Street, Silas Deane Highway |
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Direction: North/South Southern Terminus: CT 9 in Cromwell Northern Terminus: Wilbur Cross Highway (CT 15) at the Hartford city line Distance: 10.64 miles Counties: Middlesex, Hartford Signed: Yes |
