List of State Routes in Connecticut

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State Routes in Connecticut
Connecticut Highway 8.svgConnecticut Highway 15.svgConnecticut Highway 169.svg
Standard Connecticut route shields
System information
Length: 3,719 mi (5,985 km)
Notes:

Routes are generally state-maintained. There is also a system of unsigned state highways known as State Roads (SR) and Special Service Roads (SSR).

State roads maintained by the ConnDOT.
Highway names
Interstates: I-X or Route X
US Routes: US X or Route X
State: Route X
System links
  • Routes in Connecticut

The Connecticut Department of Transportation (ConnDOT) maintains a system of state highways to serve the predominant flow of traffic between towns within Connecticut, and to towns in surrounding states. State highways also include roads that provide access to federal and state facilities (Special Service Roads).

The state highway system consists of roads indicated on the official ConnDOT map and highway log. As of January 1, 2007, the state highway system contains a total of 3,719 miles (5,985 km) of roads (not including ramps and interchange connections), corresponding to approximately 20% of all roads in the state. All state highways are state-maintained except for several segments (totaling 4 miles) that are locally maintained. All interstate highways and U.S. highways in the state are part of the state highway system.

All state highways are given a number designation. Most state highways are assigned Route numbers (including U.S. highways and interstates). Route numbers are in the 1-399 range, with the exception of Interstates 684 and 691. State highways that are special service roads are assigned SSR numbers and are unsigned. SSR numbers are in the 400-499 range. Another set of unsigned state highways are called State Roads and are given SR numbers. These state roads are either feeder roads that interconnect state highways together, or long entry/exit ramps to freeways (often called connector roads). SR numbers are in the 500-999 range. Signposted state highways that are not U.S. highways or interstates are signed with the square Connecticut state highway shield.

State Routes[edit]

Routes are signed state highways and are assigned numbers from 1 to 399 (with the exception of I-684 and I-691). All state, U.S. and Interstate highways are part of the same numbering system. In 1926, the U.S. highway system was implemented. U.S. Routes 1, 5, 6, and 7 were used as designations on several primary state highways, replacing New England routes 1, 2, 3, and 4, respectively. The other New England routes that were not re-designated as U.S. routes became ordinary state highways but kept their number designation, which are used even today (with some realignment). In 1958, Connecticut received approval for the route numbers of its three primary Interstate highways: I-84, I-91, and I-95. State highways with the same number designation as the Interstate highways were renumbered to avoid duplication of route numbers.

Number Length (mi)[1] Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes
Route 2 58.03 93.39 Columbus Boulevard in Hartford US 1 in Stonington
Route 2A 9.91 15.95 I-395 / Route 2 / Route 32 in Norwich Route 2 in Preston
Route 3 14.48 23.30 Route 66 in Middletown Route 2 in East Hartford
Route 4 46.72 75.19 Route 41 / Route 343 in Sharon Farmington Avenue in West Hartford
Route 8 67.36 108.41 I-95 in Bridgeport MA 8 in Colebrook
Route 9 40.89 65.81 I-95 in Old Saybrook I-84 in West Hartford
Route 10 54.28 87.36 I-95 in New Haven US 202 / MA 10 in Granby
Route 11 7.42 11.94 Route 82 in Salem Route 2 in Colchester Length includes only completed portion
Route 12 54.46 87.64 US 1 in Groton MA 12 in Thompson
Route 14 24.33 39.16 Route 66 in Windham RI 14 in Sterling
Route 14A 10.27 16.53 Route 14 in Plainfield Route 14 in Sterling
Route 15 83.53 134.43 Hutchinson River Parkway at the New York state line in Greenwich I-84 in East Hartford Includes Merritt Parkway, Wilbur Cross Parkway, Berlin Turnpike, and Wilbur Cross Highway
Route 16 17.05 27.44 Route 66 in East Hampton Route 207 in Lebanon
Route 17 36.41 58.60 Middletown Avenue in New Haven Route 2 in Glastonbury
Route 17A 3.02 4.86 Route 17 / Route 66 in Portland Route 17 in Portland
Route 19 6.99 11.25 Route 190 in Stafford MA 19 in Stafford
Route 20 31.56 50.79 Route 8 in Winchester I-91 in Windsor Includes part of Bradley Airport Connector
Route 21 5.67 9.12 Route 12 in Killingly Route 193 in Thompson
Route 22 14.07 22.64 Route 10 in Hamden US 1 in Guilford
Route 25 28.59 46.01 I-95 in Bridgeport US 202 in Brookfield
Route 27 3.21 5.17 US 1 in Stonington Route 184 in Groton
Route 30 20.94 33.70 I-291 / US 5 in South Windsor Route 190 in Stafford
Route 31 14.34 23.08 Route 74 in Vernon Route 32 in Mansfield
Route 32 54.88 88.32 Crystal Avenue (SSR 437) in New London MA 32 in Stafford
Route 33 14.41 23.19 I-95 / Route 136 in Westport Route 35 in Ridgefield
Route 34 24.37 39.22 Washington Street in Newtown I-91 / I-95 in New Haven
Route 35 5.66 9.11 NY 35 in Ridgefield US 7 in Ridgefield
Route 37 18.66 30.03 Route 39 / Route 53 / Downs Street (SR 841) in Danbury US 7 in New Milford
Route 39 22.76 36.63 Route 37 / Route 53 / Downs Street (SR 841) in Danbury Route 55 in Sherman
Route 40 3.08 4.96 I-91 in North Haven Route 10 in Hamden
Route 41 17.86 28.74 Amenia Union Road at the New York state line in Sharon MA 41 in Salisbury
Route 42 13.66 21.98 Route 67 in Oxford Route 10 in Cheshire
Route 43 5.06 8.14 Route 4 / Route 128 in Cornwall Route 63 in Cornwall
Route 45 10.29 16.56 US 202 in Washington US 7 in Cornwall
Route 47 12.27 19.75 US 6 in Woodbury US 202 in Washington
Route 49 21.74 34.99 Route 2 in Stonington Route 14A in Sterling
Route 53 23.57 37.93 US 1 in Norwalk Route 37 / Route 39 / Downs Street (SR 841) in Danbury
Route 55 2.64 4.25 NY 55 in Sherman US 7 in New Milford
Route 57 9.51 15.30 Route 33 in Westport US 7 in Wilton
Route 58 18.58 29.90 US 1 in Fairfield Route 302 in Bethel
Route 59 12.05 19.39 US 1 in Bridgeport Route 25 in Monroe
Route 61 9.16 14.74 US 6 in Woodbury Route 63 in Morris
Route 63 52.57 84.60 Route 10 in New Haven US 7 in Canaan
Route 64 8.14 13.10 US 6 in Woodbury I-84 in Waterbury
Route 66 38.38 61.77 I-91 / I-691 in Meriden US 6 in Windham
Route 67 31.00 49.89 US 7 / US 202 in New Milford Route 63 in Woodbridge
Route 68 22.09 35.55 Route 63 in Naugatuck Route 17 in Durham
Route 69 35.16 56.58 Route 63 in New Haven Route 4 in Burlington
Route 70 10.92 17.57 I-84 / Waterbury Road (SR 801) in Cheshire Route 71 in Meriden
Route 71 19.19 30.88 US 5 in Wallingford Route 173 in West Hartford
Route 71A 2.92 4.70 Route 71 in Berlin Buell Street in New Britain
Route 72 20.05 32.27 Route 9 in New Britain Route 4 in Harwinton
Route 73 3.46 5.57 Route 63 in Watertown Route 8 in Waterbury
Route 74 22.21 35.74 Route 194 in South Windsor US 44 in Ashford
Route 75 13.52 21.76 Route 159 in Windsor MA 75 in Suffield
Route 77 13.85 22.29 Route 146 in Guilford Route 17 in Durham
Route 78 0.43 0.69 Route 2 in Stonington RI 78 in Stonington
Route 79 14.34 23.08 US 1 in Madison Route 17 in Durham
Route 80 25.91 41.70 Route 17 in New Haven Route 154 in Deep River
Route 81 15.75 25.35 US 1 in Clinton Route 154 in Haddam
Route 82 28.47 45.82 Route 9 in Chester Route 2 / Route 32 in Norwich
Route 83 27.56 44.35 New London Turnpike in Glastonbury MA 83 in Somers
Route 85 37.38 60.16 US 1 in New London US 6 / US 44 / Cider Mill Road (SR 533) in Bolton
Route 87 16.62 26.75 Route 32 in Franklin US 6 in Andover
Route 89 16.25 26.15 Route 195 in Mansfield Route 190 in Union
Route 94 9.33 15.02 Route 2 in Glastonbury Route 85 in Hebron
Route 97 29.14 46.90 Route 12 in Norwich US 44 / Route 169 in Pomfret
Route 99 10.64 17.12 Route 9 in Cromwell Wethersfield Avenue at WethersfieldHartford town line
Route 100 4.40 7.08 US 1 in East Haven Route 80 in East Haven
Route 101 9.46 15.22 US 44 in Pomfret RI 101 in Killingly
Route 102 3.45 5.55 Route 35 in Ridgefield US 7 in Ridgefield
Route 103 5.31 8.55 Route 80 in New Haven US 5 / Route 22 in North Haven
Route 104 6.82 10.98 Route 137 in Stamford Long Ridge Road at the New York state line in Stamford
Route 106 14.37 23.13 I-95 / US 1 in Stamford Route 53 in Wilton
Route 107 7.50 12.07 US 7 in Wilton Route 58 in Redding
Route 108 11.05 17.78 US 1 in Stratford Route 110 in Shelton
Route 109 20.93 33.68 US 202 in New Milford US 6 in Thomaston
Route 110 15.95 25.67 US 1 in Stratford Route 111 in Monroe
Route 111 11.71 18.85 Route 15 / Main Street (SR 731) in Trumbull Route 34 in Monroe
Route 112 6.68 10.75 US 44 in Salisbury US 7 in Salisbury
Route 113 8.12 13.07 I-95 in Bridgeport Route 110 in Stratford
Route 114 7.92 12.75 US 1 in Orange Route 63 in Woodbridge
Route 115 5.66 9.11 Route 34 in Derby Route 67 in Seymour
Route 116 4.24 6.82 Route 35 in Ridgefield NY 116 in Ridgefield
Route 117 11.32 18.22 US 1 in Groton Route 2 in Preston
Route 118 7.48 12.04 Route 63 in Litchfield Route 4 in Harwinton
Route 120 3.11 5.01 Route 322 in Southington Route 10 in Southington
Route 121 5.66 9.11 US 1 in Milford Route 34 in Orange
Route 122 3.51 5.65 I-95 / First Avenue (SR 745) in West Haven Route 63 in New Haven
Route 123 8.37 13.47 US 1 in Norwalk NY 123 in New Canaan
Route 124 9.41 15.14 US 1 in Darien Westchester Avenue at the New York state line in New Canaan
Route 125 1.24 2.00 Route 4 in Cornwall Route 128 in Cornwall
Route 126 6.08 9.78 Route 63 in Canaan US 44 in North Canaan
Route 127 6.80 10.94 Route 130 in Bridgeport Route 111 in Trumbull
Route 128 4.03 6.49 US 7 in Sharon Route 4 / Route 43 in Cornwall
Route 130 8.21 13.21 US 1 in Fairfield US 1 in Stratford
Route 131 3.78 6.08 Route 12 in Thompson MA 131 in Thompson
Route 132 10.97 17.65 Route 47 in Woodbury Route 63 in Watertown
Route 133 20.05 32.27 US 202 in Brookfield Route 67 in Bridgewater
Route 135 2.58 4.15 US 1 in Fairfield Route 58 in Fairfield
Route 136 20.46 32.93 US 1 in Darien Route 59 in Easton
Route 137 9.33 15.02 US 1 / Washington Boulevard (SSR 493) in Stamford NY 137 in Stamford
Route 138 17.73 28.53 Route 97 in Sprague RI 138 in Voluntown
Route 139 2.38 3.83 US 1 in Branford Route 22 / Route 80 in North Branford
Route 140 22.50 36.21 Route 75 in Windsor Locks Route 32 / Route 190 in Stafford
Route 142 4.27 6.87 US 1 in East Haven US 1 in Branford
Route 145 9.91 15.95 US 1 in Clinton Route 148 in Chester
Route 146 13.00 20.92 US 1 in Branford US 1 in Guilford
Route 147 5.09 8.19 Route 17 in Durham Route 66 in Middlefield
Route 148 16.35 26.31 Route 79 in Killingworth Route 82 in Lyme
Route 149 11.70 18.83 Route 82 in East Haddam Old Hartford Road in Colchester
Route 150 9.04 14.55 Route 22 in North Branford US 5 in Wallingford
Route 151 10.77 17.33 Route 82 in East Haddam Route 66 in East Hampton
Route 152 3.31 5.33 US 1 in Orange Route 34 in Orange
Route 153 5.27 8.48 US 1 in Westbrook Route 154 in Essex
Route 154 28.24 45.45 US 1 in Old Saybrook Route 9 in Middletown
Route 155 2.22 3.57 Route 17 in Middletown Route 9 in Middletown
Route 156 22.76 36.63 Route 82 in East Haddam US 1 in Waterford
Route 157 6.86 11.04 Route 68 in Durham Route 66 in Middletown
Route 159 16.82 27.07 Main Street at HartfordWindsor town line MA 159 in Suffield
Route 160 7.36 11.84 US 5 / Route 15 in Berlin Route 17 in Glastonbury
Route 161 8.03 12.92 Route 156 in East Lyme Route 85 in Montville
Route 162 20.05 32.27 US 1 in Milford US 1 in Orange
Route 163 12.86 20.70 Route 32 in Montville Route 2 / Haughton Road (SR 612) in Bozrah
Route 164 7.83 12.60 Route 2 in Preston Route 138 in Griswold
Route 165 16.01 25.77 Route 2 in Norwich RI 165 in Voluntown
Route 166 1.62 2.61 Route 153 in Westbrook US 1 in Old Saybrook
Route 167 10.41 16.75 Route 4 in Farmington US 202 / Route 10 in Simsbury
Route 168 7.93 12.76 MA 168 in Suffield Route 75 in Suffield
Route 169 38.25 61.56 Route 2 / Route 32 / Town Street (SR 642) in Norwich MA 169 in Woodstock
Route 171 20.70 33.31 I-84 in Union US 44 in Putnam
Route 172 4.45 7.16 I-84 in Southbury Route 67 in Southbury
Route 173 6.17 9.93 US 5 / Route 15 in Newington South Main Street in West Hartford
Route 174 3.18 5.12 Route 71 in New Britain Route 176 in Newington
Route 175 6.19 9.96 Route 71 in New Britain Route 99 in Wethersfield
Route 176 4.14 6.66 US 5 / Route 15 in Newington Newington Avenue at NewingtonHartford town line
Route 177 12.57 20.23 Route 10 in Plainville US 44 in Canton
Route 178 6.89 11.09 Route 185 in Bloomfield Route 159 in Windsor
Route 179 16.50 26.55 Route 4 in Burlington Route 20 in Hartland
Route 181 7.84 12.62 US 44 in Barkhamsted Route 20 in Hartland
Route 182 3.81 6.13 US 44 in Norfolk Route 182A / Route 183 in Colebrook
Route 182A 2.09 3.36 Route 182 in Colebrook Route 182 / Route 183 in Colebrook
Route 183 19.06 30.67 Route 4 in Torrington MA 183 in Norfolk
Route 184 15.66 25.20 I-95 in Groton Route 216 / Providence–New London Turnpike (SR 626) in North Stonington
Route 185 6.36 10.24 US 202 / Route 10 in Simsbury Route 189 in West Hartford
Route 186 3.57 5.75 Route 190 in Somers MA 186 in Somers
Route 187 19.74 31.77 US 44 in Hartford MA 187 in Suffield
Route 188 15.92 25.62 Route 34 in Seymour Route 63 in Middlebury
Route 189 20.32 32.70 US 44 in Hartford MA 189 in Granby
Route 190 28.27 45.50 Route 75 in Suffield Route 171 in Union
Route 191 9.30 14.97 US 5 in East Windsor Route 190 in Enfield
Route 192 3.49 5.62 Route 190 in Enfield MA 192 in Enfield
Route 193 6.63 10.67 Route 12 in Thompson Route 193 in Thompson
Route 194 3.67 5.91 US 5 in South Windsor Route 30 in South Windsor
Route 195 15.91 25.60 Route 66 in Windham Route 74 in Tolland
Route 196 5.38 8.66 Route 151 in Haddam Route 66 in East Hampton
Route 197 10.97 17.65 Route 171 in Union MA 197 in Thompson
Route 198 19.22 30.93 US 6 in Chaplin MA 198 in Woodstock
Route 199 4.62 7.44 Route 67 in Roxbury Route 47 in Washington
Route 200 1.87 3.01 Route 12 in Thompson Route 193 in Thompson
Route 201 20.10 32.35 Route 184 in Stonington Route 12 in Griswold
Route 203 5.32 8.56 Route 32 in Windham US 6 in Windham
Route 205 3.81 6.13 Route 12 in Plainfield Route 169 in Brooklyn
Route 207 16.01 25.77 Route 85 in Hebron Route 97 in Sprague
Route 209 2.93 4.72 Route 109 in Morris US 202 in Litchfield
Route 213 6.66 10.72 Route 156 in Waterford US 1 in New London
Route 214 7.30 11.75 Route 12 in Ledyard Route 2 / Foxwoods Boulevard (SR 680) in Ledyard
Route 215 4.65 7.48 US 1 in Groton US 1 in Groton
Route 216 2.78 4.47 Route 49 in North Stonington RI 216 in North Stonington
Route 217 3.84 6.18 Route 66 in Middlefield Route 372 in Cromwell
Route 218 7.00 11.27 US 44 in West Hartford Route 159 in Windsor
Route 219 14.98 24.11 US 202 in New Hartford Route 20 in Granby
Route 220 5.80 9.33 US 5 in Enfield MA 220 in Enfield
Route 222 8.08 13.00 US 6 in Thomaston Route 118 in Harwinton
Route 229 5.94 9.56 West Street in Southington US 6 in Bristol
Route 234 6.95 11.18 Route 27 in Stonington US 1 in Stonington
Route 243 6.70 10.78 Route 115 / Division Street (SR 853) in Ansonia Route 63 in New Haven
Route 244 5.72 9.21 Route 198 in Eastford Route 97 in Pomfret
Route 254 8.41 13.53 Route 8 / Waterbury Road (SR 848) in Thomaston Route 118 in Litchfield
Route 262 9.37 15.08 US 6 in Watertown US 6 in Plymouth
Route 263 6.23 10.03 Route 272 in Goshen US 44 in Winchester
Route 272 17.97 28.92 Route 4 in Torrington Norfolk Road at the Massachusetts state line in Norfolk
Route 275 4.15 6.68 Route 31 in Coventry Route 195 in Mansfield
Route 286 3.60 5.79 Route 74 in Ellington Route 83 in Ellington
Route 287 3.36 5.41 Route 176 in Newington Route 3 in Wethersfield
Route 289 5.13 8.26 Route 87 in Lebanon Route 32 in Windham
Route 302 7.96 12.81 Route 53 in Bethel Route 25 in Newtown
Route 305 3.42 5.50 Route 187 in Bloomfield Route 75 in Windsor
Route 309 4.74 7.63 Route 179 in Canton Route 167 in Simsbury
Route 313 6.85 11.02 Route 67 in Seymour Route 243 in Woodbridge
Route 314 2.07 3.33 US 5 / Route 15 in Wethersfield Route 99 in Wethersfield
Route 315 1.95 3.14 US 202 / Route 10 in Simsbury Route 189 in Simsbury
Route 316 6.04 9.72 Route 66 in Hebron US 6 in Andover
Route 317 6.10 9.82 Route 67 in Roxbury US 6 in Woodbury
Route 318 3.14 5.05 US 44 in Barkhamsted Route 219 in Barkhamsted
Route 319 2.83 4.55 Route 190 in Stafford Route 19 in Stafford
Route 320 7.05 11.35 Route 195 in Mansfield I-84 in Willington
Route 322 9.80 15.77 Route 69 in Wolcott I-691 in Southington
Route 334 4.40 7.08 Route 188 in Seymour Route 115 in Ansonia
Route 337 4.91 7.90 US 1 in New Haven Route 142 in East Haven
Route 341 15.97 25.70 Bog Hollow Road at the New York state line in Kent US 202 in Washington
Route 343 1.50 2.41 NY 343 in Sharon Route 4 / Route 41 in Sharon
Route 349 4.17 6.71 Shennecossett Road in Groton I-95 in Groton
Route 354 7.37 11.86 Route 85 in Colchester Route 82 in Salem
Route 361 3.54 5.70 Route 41 in Sharon Sharon Road at the New York state line in Salisbury
Route 364 4.56 7.34 Route 120 in Southington Route 71 in Berlin
Route 372 15.12 24.33 East Main Street at BristolPlainville town line Route 99 in Cromwell

Special Service Roads[edit]

Roads classified by the Department of Transportation as special service roads are given an unsigned number designation between 400 and 499. Special service roads are roads that connect a federal or state facility (including state parks and some Interstate Highway interchanges) to a signed state route.

Number Length (mi)[1] Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes
SSR 401 2.29 3.69 Route 20 in Windsor Locks Route 75 in Windsor Locks Bradley Airport Connector
SSR 403 1.09 1.75 One-way loop access road between Bradley Airport Connector (SSR 401) and Bradley International Airport terminal in Windsor Locks
SSR 404 0.81 1.30 Route 220 in Enfield Willard-Cybulski Correctional Institution Shaker Road, Bilton Road
SSR 405 0.47 0.76 Route 175 in Newington Hartford Regional Center Patricia M. Genova Drive
SSR 410 2.28 3.67 Route 154 in Middletown Pratt & Whitney Aircraft Plant Aircraft Road
SSR 411 1.98 3.19 Route 3 in Rocky Hill Route 99 in Rocky Hill Serves Dinosaur State Park and Arboretum
SSR 422 0.31 0.50 Route 99 in Wethersfield Hartford Avenue in Wethersfield Nott Street
SSR 423 0.31 0.50 South Road in Farmington State Highway Garage
SSR 424 0.86 1.38 Route 175 in Wethersfield Road end Russell Road
SSR 426 0.20 0.32 Route 14 in Plainfield Quinebaug Valley Fish Hatchery Russell Road
SSR 429 0.67 1.08 Route 149 in Colchester Day Pond State Park
SSR 430 0.86 1.38 Route 195 in Mansfield North Eagleville Road in Mansfield Serves University of Connecticut
SSR 431 2.39 3.85 Route 148 in Lyme Route 82 in East Haddam Serves Gillette Castle State Park
SSR 432 0.54 0.87 US 1 in East Lyme Stone's Ranch Military Reservation
SSR 433 1.28 2.06 Route 32 in Montville Fort Shantok Archeological District
SSR 434 10.13 16.30 Route 82 in East Haddam Route 82 in East Haddam Serves Devil's Hopyard State Park
SSR 435 0.21 0.34 US 6 in Killingly Old Furnace State Park
SSR 437 0.44 0.71 Route 32 in New London State Pier Crystal Avenue
SSR 438 2.90 4.67 US 44 in Putnam Quaddick Town Farm Road in Thompson
SSR 439 0.56 0.90 Route 151 in East Hampton Hurd Park Road in East Haddam Serves Hurd State Park
SSR 449 1.07 1.72 Route 156 in East Lyme I-95 in East Lyme Rocky Neck Connector; serves Rocky Neck State Park
SSR 450 4.46 7.18 US 1 in Madison Route 79 in Madison Hammonasset Connector, Duck Hole Road, Horse Pond Road; serves Hammonasset Beach State Park
SSR 453 0.32 0.51 Route 10 in Hamden Mount Carmel Avenue in Hamden Serves Sleeping Giant State Park
SSR 454 1.89 3.04 Route 110 in Shelton Birchbank Road in East Haddam Serves Indian Well State Park
SSR 476 1.41 2.27 Sherwood Island State Park in Westport US 1 in Westport Sherwood Island Connector
SSR 478 6.08 9.78 Route 45 in Washington Route 45 in Warren Serves Lake Waramaug State Park
SSR 479 0.25 0.40 US 202 in Washington Mount Tom State Park
SSR 480 0.77 1.24 Route 4 in Cornwall Great Hollow Road in Cornwall Serves Mohawk Mountain State Park
SSR 481 0.28 0.45 Route 39 in New Fairfield Squantz Pond State Park
SSR 482 4.11 6.61 Route 181 / Route 318 in Barkhamsted Route 20 in Barkhamsted Serves Peoples State Forest
SSR 483 0.49 0.79 Winsted Road (SR 800) in Torrington Burr Pond State Park
SSR 485 1.17 1.88 Route 4 in Torrington University of Connecticut, Torrington campus University Drive
SSR 486 1.08 1.74 Route 188 in Southbury Waterbury–Oxford Airport in Oxford
SSR 487 4.24 6.82 Route 67 in Southbury Kettletown State Park
SSR 488 0.90 1.45 Route 20 in Hartland Mill Street Serves Tunxis State Forest
SSR 489 0.17 0.27 Route 4 in Burlington Connecticut State Fish Hatchery
SSR 490 1.10 1.77 Route 34 in Newtown Garner Correctional Institution Nunnawauk Road, Wasserman Way; provides access to I-84
SSR 492 0.24 0.39 US 6 / Route 67 in Southbury State Highway Garage
SSR 493 0.34 0.55 Station Place in Stamford US 1 / Route 137 in Stamford Washington Boulevard; serves Stamford Transportation Center

State Roads[edit]

State Roads are state-maintained roads that are usually long entrance/exit ramps to/from an expressway, or short interconnecting roads between signed routes. Roads classified by the Department of Transportation as state roads are given an unsigned number designation between 500 and 999. The first digit denotes which Maintenance District the road is mainly located in:

Number Length (mi)[1] Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes
Route 500 0.51 0.82 I-84 / US 6 / Route 2 in East Hartford Governor Street in East Hartford
Route 501 0.77 1.24 I-84 / US 6 in West Hartford Park Road in West Hartford Trout Brook Connector
Route 502 6.31 10.15 Route 2 in East Hartford US 6 / US 44 in Manchester East River Drive Extended, Silver Lane, Spencer Street
Route 503 0.68 1.09 Sisson Avenue in Hartford I-84 / US 6 in Hartford Sisson Avenue Connector
Route 504 0.70 1.13 Flatbush Avenue in Hartford I-84 / US 6 in Hartford
Route 505 0.53 0.85 Route 175 in Newington Route 9 in Newington Fenn Road
Route 508 1.82 2.93 Route 4 in Farmington I-84 / US 6 in Farmington
Route 509 0.51 0.82 Route 322 in Southington Route 10 in Southington Clark Street
Route 510 2.55 4.10 US 5 in East Windsor US 5 in Enfield Main Street, Depot Hill Road
Route 511 0.38 0.61 Route 10 in Plainville Route 72 in Plainville Hooker Street
Route 513 0.67 1.08 Route 75 in Suffield End state maintenance Bridge Street
Route 514 0.20 0.32 US 5 in Enfield Route 190 / Pearl Street in Enfield Franklin Street
Route 515 0.20 0.32 Pearl Street in Enfield US 5 / Route 190 in Enfield Frew Terrace
Route 516 0.18 0.29 Route 2 in East Hartford Main Street (SR 517) in East Hartford Willow Street Extended
Route 517 1.24 2.00 Route 2 in East Hartford US 5 / Route 15 in East Hartford Main Street, High Street
Route 518 0.45 0.72 Silver Lane (SR 502) in East Hartford I-84 / US 6 in East Hartford Roberts Street
Route 524 0.31 0.50 Route 3 in Cromwell Route 372 in Cromwell Berlin Road
Route 526 1.66 2.67 Route 187 in Suffield Route 168 in Suffield Sheldon Street
Route 527 2.05 3.30 Route 30 in Vernon Route 74 / Route 83 in Vernon West Street
Route 526 2.59 4.17 Route 190 in Somers Route 83 in Somers Turnpike Road
Route 529 1.33 2.14 Route 173 in West Hartford Newington Avenue in Hartford New Britain Avenue
Route 530 0.58 0.93 Wethersfield Avenue in Hartford Brainard Road in Hartford Airport Road
Route 531 1.39 2.24 Route 4 in Farmington I-84 / US 6 in Farmington South Road, Colt Highway
Route 532 0.44 0.71 Route 177 in Plainville Route 10 in Southington Washington Street, Birch Street
Route 533 4.03 6.49 US 6 / US 44 / Route 85 in Bolton Route 30 in Vernon Cider Mill Road, Tunnel Road
Route 534 4.45 7.16 Route 83 in Manchester Route 85 in Bolton Charter Oak Street, Highland Street
Route 535 0.21 0.34 Route 71 in West Hartford I-84 / US 6 in West Hartford Ridgewood Road
Route 536 1.53 2.46 Route 372 in Plainville Route 372 in Plainville Pine Street, Woodford Avenue, Crooked Street
Route 539 3.70 5.95 Route 20 in Hartland Route 189 in Granby Mountain Road
Route 540 1.43 2.30 Route 189 in East Granby Route 187 in East Granby Hatchett Hill Road
Route 541 0.82 1.32 Tunnel Road (SR 533) in Vernon Route 30 in Vernon South Frontage Road, Bolton Road
Route 542 0.30 0.48 Tunnel Road (SR 533) in Vernon Bolton Road (SR 541) in Vernon Ferguson Road
Route 543 0.38 0.61 Route 314 in Wethersfield Maple Avenue at WethersfieldHartford town line Berlin Turnpike
Route 545 0.15 0.24 Route 66 in Middletown Route 9 / Route 17 in Middletown Washington Street
Route 549 1.14 1.83 US 6 in Farmington South Road (SR 531) in Farmington Birdseye Road
Route 552 0.23 0.37 US 6 in Farmington Route 10 in Farmington Scott Swamp Road
Route 555 1.30 2.09 Route 372 in New Britain Main Street in New Britain West Main Street
Route 565 1.73 2.78 Route 179 in Canton US 44 in Canton Maple Avenue
Route 569 0.17 0.27 I-91 in Windsor Locks Route 159 in Windsor Locks Lawnacre Road
Route 571 1.52 2.45 Route 71A / Route 372 in Berlin Route 9 in Berlin
Route 572 0.48 0.77 Route 9 in Berlin US 5 / Route 15 in Berlin Frontage Road, Worthington Ridge Road
Route 585 1.25 2.01 Route 168 in Suffield Pointgrove Road at the Massachusetts state line in Suffield Babbs Road
Route 597 0.58 0.93 Route 10 in Southington I-84 in Southington
Route 598 0.76 1.22 Pulaski Circle in Hartford I-91 in Hartford Whitehead Highway
Route 600 0.67 1.08 Route 138 in Lisbon Route 169 in Lisbon Kinsman Hill Road
Route 602 3.28 5.28 Route 154 in Essex Route 80 in Deep River Main Street, Warsaw Street
Route 603 3.54 5.70 Route 85 in Hebron Route 316 in Andover London Road, Boston Hill Road
Route 604 0.80 1.29 Route 153 in Essex Main Street (SR 602) in in Essex Westbrook Road
Route 605 0.30 0.48 Route 165 in Preston Route 164 in Preston Old Shetucket Turnpike
Route 607 2.54 4.09 Route 12 in Killingly US 6 in Killingly Westcott Road
Route 608 4.32 6.95 Norwich Avenue (SR 616) / McGrath Lane in Lebanon Fitchville Road at BozrahNorwich town line Norwich Avenue, Fitchville Road
Route 609 0.97 1.56 Route 151 in East Haddam Route 149 in East Haddam Leesville Road
Route 610 2.16 3.48 Route 32 in Franklin Route 207 in Franklin Baltic Road
Route 612 0.14 0.23 Route 163 in Bozrah Fitchville Road (SR 608) in Bozrah Haughton Road
Route 614 2.63 4.23 US 1 in Groton Route 184 in Groton Allyn Street, Mystic Street, Cow Hill Road
Route 615 1.32 2.12 Route 2 in Colchester Route 85 in Colchester Old Hartford Road, Broadway
Route 616 6.83 10.99 Route 85 in Colchester Road end in Lebanon Norwich Avenue, McGrath Lane
Route 617 0.85 1.37 I-95 / Route 2 in North Stonington Route 49 in North Stonington
Route 618 0.69 1.11 Westcott Road (SR 607) in Killingly US 6 in Killingly North Frontage Road
Route 619 0.49 0.79 I-395 in Killingly Westcott Road (SR 607) in Killingly Gauthier Avenue
Route 620 0.31 0.50 Route 171 in Union End state maintenance Mashapaug Road
Route 621 0.10 0.16 Route 9 / Route 153 in Essex Route 154 in Essex
Route 623 1.23 1.98 One-way frontage road along southbound I-95 in New London and Waterford North Frontage Road, Parkway North
Route 624 0.60 0.97 I-95 in Waterford US 1 in New London Parkway South, South Frontage Road
Route 625 0.99 1.59 US 1 in Westbrook Route 145 in Westbrook Grove Beach Road
Route 626 0.25 0.40 Route 216 / Route 184 in North Stonington Rhode Island state line Providence New London Turnpike
Route 627 0.91 1.46 Route 201 in North Stonington Route 2 in North Stonington Mystic Road
Route 628 0.33 0.53 US 1 in Old Saybrook End state maintenance Spring Brook Road
Route 629 0.26 0.42 Route 138 in Griswold I-395 / Route 164 in Griswold
Route 630 0.36 0.58 Route 164 in Griswold Route 138 / I-395 in Griswold
Route 632 0.80 1.29 Route 195 in Mansfield US 6 / Mansfield City Road in Mansfield North Frontage Road
Route 633 0.79 1.27 Mansfield City Road in Mansfield US 6 / Route 195 in Mansfield South Frontage Road
Route 635 0.58 0.93 Huntington Street (SR 641) in New London Briggs Street (SR 638) in New London Williams Street
Route 636 0.64 1.03 Norwood Avenue in New London Route 32 in New London Briggs Street, Briggs-Mohegan Connector, Mohegan Avenue
Route 637 0.51 0.82 Route 11 in Colchester Route 354 in Colchester Lake Hayward Road
Route 638 0.16 0.26 Williams Street (SR 635) in New London Briggs Street (SR 638) / Briggs-Mohegan Connector (SR 638) in New London Briggs Street
Route 639 0.77 1.24 US 1 / Jefferson Avenue in New London US 1 in New London Colman Street; signed as southbound US 1
Route 640 0.14 0.23 Route 74 in Willington Route 32 in Willington Phelps Way
Route 641 1.76 2.83 US 1 in New London US 1 in New London South Frontage Road, Huntington Street, Jay Street, Truman Street, Bank Street
Route 642 2.65 4.26 Route 2 / Route 32 in Norwich Route 2 / Route 32 / Route 169 in Norwich Town Street, Washington Street
Route 643 0.13 0.21 US 1 in New London Route 213 in New London Lee Avenue
Route 644 0.75 1.21 Route 97 in Pomfret US 44 / Route 169 in Pomfret Murdock Road
Route 646 0.18 0.29 Route 82 in Norwich Route 82 in Norwich North Thames Street
Route 647 0.24 0.39 I-395 in Plainfield Route 12 in Plainfield Lathrop Road
Route 649 2.69 4.33 Route 349 in Groton US 1 in Groton Rainville Avenue, Poquonnock Road, High Rock Road, Tower Avenue, South Road
Route 654 0.28 0.45 Route 27 in Stonington I-95 in Stonington
Route 660 1.64 2.64 Route 97 in Norwich Route 138 in Sprague Bridge Street
Route 661 0.11 0.18 Route 32 in Windham Route 66 in Windham Thread City Crossing (Frog Bridge)
Route 664 5.70 9.17 Route 14 in Plainfield US 6 in Killingly Lake Street, Snake Meadow Road
Route 668 2.00 3.22 Route 169 in Canterbury Route 12 in Canterbury Butts Bridge Road
Route 680 0.99 1.59 Route 2 in Ledyard Route 2 / Wintechog Hill Road in North Stonington MGM Drive, Foxwoods Boulevard
Route 693 1.41 2.27 Route 32 in Waterford I-395 in Montville Montville Connector
Route 695 4.49 7.23 I-395 in Plainfield US 6 in Killingly Connecticut Turnpike
Route 700 1.73 2.78 Route 130 / Water Street in Bridgeport Route 130 / State Street Extended in Bridgeport Fairfield Avenue; westbound couplet of Route 130
Route 702 0.81 1.30 US 5 in Wallingford I-91 in Wallingford Wharton Brook Connector
Route 703 0.20 0.32 Route 63 in Bethany Route 42 in Bethany Litchfield Turnpike
Route 705 2.63 4.23 Route 162 in West Haven Route 162 in West Haven Ocean Avenue, Platt Avenue
Route 706 0.82 1.32 Howe Street in New Haven Route 10 in New Haven North Frontage Road; westbound couplet of Route 34
Route 707 3.62 5.83 Whitney Avenue at New HavenHamden town line Route 10 / Dixwell Avenue (SR 717) in Hamden Whitney Avenue
Route 708 0.32 0.51 Old Gate Lane in Milford I-95 / Woodmont Road in Milford Old Gate Lane
Route 709 0.27 0.43 Route 63 in Naugatuck Route 8 in Naugatuck South Main Street
Route 710 0.31 0.50 Route 8 / Union Street (SR 723) in Naugatuck Route 8 in Naugatuck North Main Street
Route 711 0.81 1.30 Penny Avenue (SR 730 and SR 743) in Trumbull Route 108 in Trumbull Huntington Turnpike
Route 712 0.24 0.39 Route 110 in Shelton Route 34 in Derby Bridge Street
Route 713 0.27 0.43 Route 15 in Fairfield Route 59 in Fairfield Congress Street
Route 714 0.24 0.39 Huntington Street in Shelton Route 108 in Shelton Bridgeport Avenue, Center Street
Route 715 0.51 0.82 I-91 in North Haven Route 103 in North Haven Universal Drive, Montowese Avenue
Route 717 1.15 1.85 Route 10 / Whitney Avenue (SR 707) in Hamden US 5 in North Haven Dixwell Avenue
Route 718 0.27 0.43 US 1 in Guilford I-95 in Guilford Goose Lane
Route 719 2.02 3.25 Route 123 in Norwalk US 7 in Norwalk Main Avenue
Route 720 0.26 0.42 Hartford Turnpike in North Haven US 5 in North Haven Devine Street
Route 721 1.85 2.98 Route 67 in Seymour Old Turnpike in Beacon Falls North Street, North Main Street, South Main Street
Route 722 0.37 0.60 US 1 in Bridgeport Route 8 in Bridgeport Chopsey Hill Road
Route 723 0.16 0.26 North Main Street (SR 710) in Naugatuck North Main Street (SR 710) in Naugatuck Union Street, Golden Court
Route 725 0.08 0.13 Route 22 in North Haven Route 15 in North Haven Hartford Turnpike
Route 816 1.7 2.7 Route 34 in Newtown River Rd No. 1 in Southbury Original Route 6 surface routing, before I84.

History[edit]

1913 trunk line system[edit]

The 14 trunk line routes of the original state highway system of Connecticut

In 1900, the State Highway Department proposed a statewide system of trunk line routes. By 1913, the system consisted of 10 north-south highways and 4 east-west highways, including the lower Boston Post Road. The system covered roughly 1,400 miles (2,300 km). The 14 trunk lines were numbered on paper but were never actually signposted. The 14 trunk line routes were:

New England road marking system[edit]

The first public route numbering came with the advent of the New England road marking system of 1922. This highway numbering system was used throughout New England and consisted of 25 routes (with route numbers from 1 to 32). A total of 9 of the routes passed through Connecticut (Routes 1, 2, 3, 4, 8, 10, 12, 17, and 32). In this system, inter-state routes would be numbered 1-99 and state routes numbered 100 and up. The New England route system was soon eclipsed by the national U.S. highway system.

1922-1931[edit]

The State Highway Department classified state roads as either State Highways (SH) or State Aid Roads (SA). These roads were given number designations – 100-299 for primary routes and 300+ for secondary routes. Some state roads were signposted and some were not.

1932 renumbering[edit]

The state abandoned its old numbering system and renumbered almost all of their state highways in 1932. Most of the present route numbers were formed during this renumbering. The only route numbers that survived were U.S. Routes and a few state highway routes. For route numbers established in 1932, the new numbering system used odd numbers for north-south routes and even numbers for east-west routes, matching the U.S. Highway numbering system. The New England routes that were grandfathered into the highway system (Routes 8, 10, 12, 32) did not follow the new system. The state also assigned new route numbers in clusters, with routes in the same general location having numbers close to each other as well. Shortly after the renumbering, in 1935, two new U.S. Routes were commissioned: US 44 (taking over part of old New England Route 17) and US 202.

1963 renumbering[edit]

In 1963, the state passed the Road Reclassification Act to fix the by now fragmented state highway system. Many state highways had state maintenance gaps and several highway segments were even isolated from the rest of the system. State highways were classified into primary, secondary, and service roads. Primary routes were essentially left unchanged, while minor realignments, additions/deletions, and extensions occurred in many secondary routes. About 1/3 of all routes were changed to some degree by this renumbering. The current system of unsigned ("secret") routes, including the special service roads, was also created during this renumbering. The state highway system has not had any major changes since then. The state completely abandoned the odd/even numbering scheme established in 1932 with new numbers in 1963 assigned without regard to their direction or general location.

See also[edit]

External links[edit]

References[edit]