List of state 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).

State Routes in Connecticut
Standard Connecticut route shields
System information
Length3,719 mi (5,985 km)
NotesRoutes 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
InterstatesInterstate X (I-X)
US HighwaysU.S. Route X (US X)
StateRoute X
System links
  • Routes in Connecticut

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

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 58.0393.39 Columbus Boulevard in HartfordUS 1 in Stonington ——
Route 2A 9.9115.95 I-395 / Route 2 / Route 32 in NorwichRoute 2 in Preston ——
Route 3 14.4823.30 Route 66 in MiddletownRoute 2 in East Hartford ——
Route 4 46.7275.19 Route 41 / Route 343 in SharonFarmington Avenue in West Hartford ——
Route 8 67.36108.41 I-95 in BridgeportMA 8 in Colebrook ——
Route 8A —— —— —01951-01-011951
Route 8A —— —— —01960-01-011960
Route 8A —— —— —01962-01-011962
Route 9 40.8965.81 I-95 in Old SaybrookI-84 in West Hartford 01932-01-011932[2]current
Route 9A —— —— —01940-01-011940
Route 9A —— —— —01963-01-011963
Route 9A —— —— —01986-01-011986
Route 10 54.2887.36 I-95 in New HavenUS 202 / MA 10 in Granby ——
Route 10A —— —— —01962-01-011962
Route 10A —— —— —01962-01-011962
Route 10A —— —— —01970-01-011970
Route 11 7.4211.94 Route 82 in SalemRoute 2 in Colchester —— Length includes only completed portion
Route 12 54.4687.64 US 1 in GrotonMA 12 in Thompson ——
Route 14 24.3339.16 Route 66 in WindhamRI 14 in Sterling 01932-01-011932[2]current
Route 14A 10.2716.53 Route 14 in PlainfieldRoute 14 in Sterling ——
Route 15 83.53134.43 Hutchinson River Parkway at the New York state line in GreenwichI-84 in East Hartford 01932-01-011932[3]current Includes Merritt Parkway, Wilbur Cross Parkway, Berlin Turnpike, and Wilbur Cross Highway
Route 15A —— —— —01948-01-011948
Route 15A —— —— —01948-01-011948
Route 16 17.0527.44 Route 66 in East HamptonRoute 207 in Lebanon ——
Route 16A —— —— —01963-01-011963
Route 17 —— —— 01939-01-01193901940-01-011940
Route 17 36.4158.60 Middletown Avenue in New HavenRoute 2 in Glastonbury ——
Route 17A 3.024.86 Route 17 / Route 66 in PortlandRoute 17 in Portland ——
Route 17A —— —— 01953-01-01195301954-01-011954 duplicated the current Route 17A
Route 18 —— —— —01951-01-011951
Route 19 6.9911.25 Route 190 in StaffordMA 19 in Stafford ——
Route 20 31.5650.79 Route 8 in WinchesterI-91 in Windsor 01932-01-011932[3]current Includes part of Bradley Airport Connector
Route 21 5.679.12 Route 12 in KillinglyRoute 193 in Thompson ——
Route 22 14.0722.64 Route 10 in HamdenUS 1 in Guilford ——
Route 25 28.5946.01 I-95 in BridgeportUS 202 in Brookfield 01932-01-011932[3]current
Route 25A —— —— 01932-01-011932[3]01933-01-011933
Route 27 3.215.17 US 1 in StoningtonRoute 184 in Groton ——
Route 29 —— US 1 in DarienWestchester Avenue at the New York state line in New Canaan —01966-01-011966 renumbered Route 124 to match New York
Route 30 20.9433.70 I-291 / US 5 in South WindsorRoute 190 in Stafford ——
Route 31 14.3423.08 Route 74 in VernonRoute 32 in Mansfield ——
Route 31A —— —— 01947-01-01194701948-01-011948 may have never been signed
Route 32 54.8888.32 Crystal Avenue (SSR 437) in New LondonMA 32 in Stafford ——
Route 32A —— —— —01943-01-011943 duplicated the other Route 32A
Route 32A —— —— —01943-01-011943 may never have been signed; duplicated the other Route 32A
Route 33 14.4123.19 I-95 / Route 136 in WestportRoute 35 in Ridgefield 01932-01-011932[3]current
Route 34 24.3739.22 Washington Street in NewtownI-91 / I-95 in New Haven 01932-01-011932[4]current
Route 35 5.669.11 NY 35 in RidgefieldUS 7 in Ridgefield 01932-01-011932[3]current
Route 35A —— —— —01963-01-011963 Replaced by unsigned SR 835
Route 37 18.6630.03 Route 39 / Route 53 / Downs Street (SR 841) in DanburyUS 7 in New Milford 01932-01-011932[4]current
Route 37A —— —— —01963-01-011963
Route 39 22.7636.63 Route 37 / Route 53 / Downs Street (SR 841) in DanburyRoute 55 in Sherman ——
Route 40 3.084.96 I-91 in North HavenRoute 10 in Hamden ——
Route 41 17.8628.74 Amenia Union Road at the New York state line in SharonMA 41 in Salisbury 01932-01-011932[5]current
Route 42 13.6621.98 Route 67 in OxfordRoute 10 in Cheshire ——
Route 43 5.068.14 Route 4 / Route 128 in CornwallRoute 63 in Cornwall ——
Route 45 10.2916.56 US 202 in WashingtonUS 7 in Cornwall ——
Route 47 12.2719.75 US 6 in WoodburyUS 202 in Washington 01932-01-011932[4]current
Route 49 —— —— 01932-01-011932[4]01954-01-011954 Replaced by extended Route 72; this road became Route 272 in 1963
Route 49 21.7434.99 Route 2 in StoningtonRoute 14A in Sterling 01959-01-011959current
Route 49A —— —— 01959-01-01195901959-01-011959 probably never signed
Route 51 —— —— 01962-01-01196201976-01-011976 Former route of US 1, replaced by US 1 again when it was rerouted off of I-95
Route 52 —— —— —01983-01-011983 replaced by I-395 when it was rerouted off of I-95
Route 53 23.5737.93 US 1 in NorwalkRoute 37 / Route 39 / Downs Street (SR 841) in Danbury ——
Route 55 2.644.25 NY 55 in ShermanUS 7 in New Milford ——
Route 57 9.5115.30 Route 33 in WestportUS 7 in Wilton 01932-01-011932[4]current
Route 58 18.5829.90 US 1 in FairfieldRoute 302 in Bethel ——
Route 58A —— —— 01932-01-01193201935-01-011935
Route 59 12.0519.39 US 1 in BridgeportRoute 25 in Monroe ——
Route 61 9.1614.74 US 6 in WoodburyRoute 63 in Morris 01932-01-011932[3]current
Route 63 52.5784.60 Route 10 in New HavenUS 7 in Canaan 01932-01-011932[4]current
Route 64 8.1413.10 US 6 in WoodburyI-84 in Waterbury ——
Route 65 —— —— 01932-01-011932[3]01951-01-011951
Route 65A —— —— 01944-01-01194401951-01-011951
Route 66 38.3861.77 I-91 / I-691 in MeridenUS 6 in Windham ——
Route 67 31.0049.89 US 7 / US 202 in New MilfordRoute 63 in Woodbridge ——
Route 67A —— —— 01959-01-01195901963-01-011963 replaced by unsigned SR 867
Route 68 22.0935.55 Route 63 in NaugatuckRoute 17 in Durham 01932-01-011932[3]current
Route 69 35.1656.58 Route 63 in New HavenRoute 4 in Burlington ——
Route 70 10.9217.57 I-84 / Waterbury Road (SR 801) in CheshireRoute 71 in Meriden 01932-01-011932[5]current
Route 71 19.1930.88 US 5 in WallingfordRoute 173 in West Hartford ——
Route 71A 2.924.70 Route 71 in BerlinBuell Street in New Britain ——
Route 72 20.0532.27 Route 9 in New BritainRoute 4 in Harwinton ——
Route 73 3.465.57 Route 63 in WatertownRoute 8 in Waterbury 01932-01-011932[3]current
Route 74 22.2135.74 Route 194 in South WindsorUS 44 in Ashford ——
Route 75 13.5221.76 Route 159 in WindsorMA 75 in Suffield 01932-01-011932[5]current
Route 76 —— —— —01951-01-011951
Route 77 13.8522.29 Route 146 in GuilfordRoute 17 in Durham 01932-01-011932[4]current
Route 78 —— —— —01951-01-011951
Route 78 0.430.69 Route 2 in StoningtonRI 78 in Stonington ——
Route 79 14.3423.08 US 1 in MadisonRoute 17 in Durham 01932-01-011932[3]current
Route 80 25.9141.70 Route 17 in New HavenRoute 154 in Deep River 01932-01-011932[5]current
Route 81 15.7525.35 US 1 in ClintonRoute 154 in Haddam 01932-01-011932[5]current
Route 82 28.4745.82 Route 9 in ChesterRoute 2 / Route 32 in Norwich 01932-01-011932[4]current
Route 83 27.5644.35 New London Turnpike in GlastonburyMA 83 in Somers 01932-01-011932[3]current
Route 84 —— —— —01959-01-011959[6] Renumbered Route 95, and is now Route 184
Route 85 37.3860.16 US 1 in New LondonUS 6 / US 44 / Cider Mill Road (SR 533) in Bolton 01932-01-011932[4]current
Route 86 —— —— —01951-01-011951 Replaced by an extended Route 156
Route 87 16.6226.75 Route 32 in FranklinUS 6 in Andover 01932-01-011932[3]current
Route 89 16.2526.15 Route 195 in MansfieldRoute 190 in Union 01932-01-011932[3]current
Route 91 —— —— 01932-01-011932[3]01959-01-011959[6]
Route 93 —— —— 01932-01-011932[3]01959-01-011959[6]
Route 94 9.3315.02 Route 2 in GlastonburyRoute 85 in Hebron 01932-01-011932[4]current
Route 95 —— —— 01932-01-011932[3]01959-01-011959[6] Renumbered Route 49
Route 95 —— —— 01959-01-011959[6]01964-01-011964 Renumbered Route 184
Route 95A —— —— —01959-01-011959[6] Renumbered Route 49A
Route 97 29.1446.90 Route 12 in NorwichUS 44 / Route 169 in Pomfret ——
Route 99 10.6417.12 Route 9 in CromwellWethersfield Avenue at Wethersfield–Hartford town line ——
Route 100 4.407.08 US 1 in East HavenRoute 80 in East Haven ——
Route 101 —— —— —01935-01-011935 Replaced by US 44
Route 101 9.4615.22 US 44 in PomfretRI 101 in Killingly ——
Route 102 3.455.55 Route 35 in RidgefieldUS 7 in Ridgefield ——
Route 103 5.318.55 Route 80 in New HavenUS 5 / Route 22 in North Haven ——
Route 104 6.8210.98 Route 137 in StamfordLong Ridge Road at the New York state line in Stamford ——
Route 105 —— —— —01963-01-011963
Route 106 —— Route 58 near EastonRoute 59 near Easton —01963-01-011963 Center Street; decommissioned in exchange for creating the current Route 106
Route 106 14.3723.13 I-95 / US 1 in StamfordRoute 53 in Wilton 01963-01-011963current
Route 107 7.5012.07 US 7 in WiltonRoute 58 in Redding ——
Route 108 11.0517.78 US 1 in StratfordRoute 110 in Shelton ——
Route 109 20.9333.68 US 202 in New MilfordUS 6 in Thomaston 01932-01-011932[3]current
Route 110 15.9525.67 US 1 in StratfordRoute 111 in Monroe ——
Route 111 11.7118.85 Route 15 / Main Street (SR 731) in TrumbullRoute 34 in Monroe ——
Route 112 6.6810.75 US 44 in SalisburyUS 7 in Salisbury ——
Route 113 8.1213.07 I-95 in BridgeportRoute 110 in Stratford ——
Route 113A —— —— —01947-01-011947
Route 114 7.9212.75 US 1 in OrangeRoute 63 in Woodbridge 01932-01-011932[3]current
Route 114A —— —— —01951-01-011951 probably never signed
Route 115 5.669.11 Route 34 in DerbyRoute 67 in Seymour 01932-01-011932[3]current
Route 116 —— —— 01932-01-011932[3]01967-01-011967 Renumbered Route 118 so that Route 116 could be reused to match New York
Route 116 4.246.82 Route 35 in RidgefieldNY 116 in Ridgefield ——
Route 117 —— —— —01954-01-011954
Route 117 11.3218.22 US 1 in GrotonRoute 2 in Preston ——
Route 118 —— —— —01962-01-011962
Route 118 7.4812.04 Route 63 in LitchfieldRoute 4 in Harwinton ——
Route 119 —— —— —01934-01-011934
Route 119 —— —— —01963-01-011963
Route 120 3.115.01 Route 322 in SouthingtonRoute 10 in Southington ——
NY 120A 4.67.4 Route 120A in Harrison, NYRoute 120A in Rye Brook, NY —— King St, Greenwich ... parts in CT and other parts along NY/CT line
Route 121 5.669.11 US 1 in MilfordRoute 34 in Orange ——
Route 122 3.515.65 I-95 / First Avenue (SR 745) in West HavenRoute 63 in New Haven ——
Route 123 8.3713.47 US 1 in NorwalkNY 123 in New Canaan ——
Route 124 —— —— —01963-01-011963 Demoted to SR 832 and SR 834
Route 124 9.4115.14 US 1 in DarienWestchester Avenue at the New York state line in New Canaan ——
Route 125 1.242.00 Route 4 in CornwallRoute 128 in Cornwall ——
Route 126 6.089.78 Route 63 in CanaanUS 44 in North Canaan ——
Route 127 6.8010.94 Route 130 in BridgeportRoute 111 in Trumbull ——
Route 128 4.036.49 US 7 in SharonRoute 4 / Route 43 in Cornwall ——
Route 129 —— —— —01963-01-011963
Route 130 —— —— —01963-01-011963
Route 130 8.2113.21 US 1 in FairfieldUS 1 in Stratford ——
Route 131 3.786.08 Route 12 in ThompsonMA 131 in Thompson ——
Route 132 10.9717.65 Route 47 in WoodburyRoute 63 in Watertown ——
Route 133 20.0532.27 US 202 in BrookfieldRoute 67 in Bridgewater ——
Route 134 —— —— —01963-01-011963 Decommissioned in 1956, but restored in 1961; replaced by rerouted Route 109
Route 135 2.584.15 US 1 in FairfieldRoute 58 in Fairfield ——
Route 136 20.4632.93 US 1 in DarienRoute 59 in Easton ——
Route 137 9.3315.02 US 1 / Washington Boulevard (SSR 493) in StamfordNY 137 in Stamford 01932-01-011932[3]current
Route 138 17.7328.53 Route 97 in SpragueRI 138 in Voluntown ——
Route 138A —— —— —01962-01-011962
Route 139 2.383.83 US 1 in BranfordRoute 22 / Route 80 in North Branford 01932-01-011932[2]current
Route 139A —— —— —01964-01-011964 the last highway log to show this road was the 1948 highway log
Route 140 22.5036.21 Route 75 in Windsor LocksRoute 32 / Route 190 in Stafford 01932-01-011932[3]current
Route 140A —— —— —01963-01-011963
Route 141 —— —— —01951-01-011951
Route 142 4.276.87 US 1 in East HavenUS 1 in Branford ——
Route 143 —— —— —01962-01-011962
Route 144 —— —— —01962-01-011962
Route 145 9.9115.95 US 1 in ClintonRoute 148 in Chester 01932-01-011932[3]current
Route 146 13.0020.92 US 1 in BranfordUS 1 in Guilford ——
Route 147 5.098.19 Route 17 in DurhamRoute 66 in Middlefield 01932-01-011932[4]current
Route 148 16.3526.31 Route 79 in KillingworthRoute 82 in Lyme 01932-01-011932[3]current
Route 148A —— —— —01951-01-011951
Route 149 11.7018.83 Route 82 in East HaddamOld Hartford Road in Colchester ——
Route 150 9.0414.55 Route 22 in North BranfordUS 5 in Wallingford ——
Route 151 10.7717.33 Route 82 in East HaddamRoute 66 in East Hampton 01932-01-011932[4]current
Route 152 3.315.33 US 1 in OrangeRoute 34 in Orange 01932-01-011932[7]current
Route 153 5.278.48 US 1 in WestbrookRoute 154 in Essex ——
Route 154 28.2445.45 US 1 in Old SaybrookRoute 9 in Middletown 01932-01-011932[3]current
Route 154A —— —— —01965-01-011965
Route 155 2.223.57 Route 17 in MiddletownRoute 9 in Middletown ——
Route 156 22.7636.63 Route 82 in East HaddamUS 1 in Waterford 01932-01-011932[3]current
Route 156A —— —— —01961-01-011961
Route 157 6.8611.04 Route 68 in DurhamRoute 66 in Middletown ——
Route 158 —— —— —01950-01-011950
Route 159 —— —— —01963-01-011963
Route 159 16.8227.07 Main Street at Hartford–Windsor town lineMA 159 in Suffield 01968-01-011968current formerly US-5A
Route 160 7.3611.84 US 5 / Route 15 in BerlinRoute 17 in Glastonbury ——
Route 161 8.0312.92 Route 156 in East LymeRoute 85 in Montville 01932-01-011932[3]current
Route 162 20.0532.27 US 1 in MilfordUS 1 in Orange 01932-01-011932[8]current
Route 163 12.8620.70 Route 32 in MontvilleRoute 2 / Haughton Road (SR 612) in Bozrah ——
Route 164 7.8312.60 Route 2 in PrestonRoute 138 in Griswold ——
Route 165 16.0125.77 Route 2 in NorwichRI 165 in Voluntown 01932-01-011932[7]current
Route 166 1.622.61 Route 153 in WestbrookUS 1 in Old Saybrook ——
Route 167 10.4116.75 Route 4 in FarmingtonUS 202 / Route 10 in Simsbury 01932-01-011932[8]current
Route 168 —— —— —01951-01-011951
Route 168 7.9312.76 MA 168 in SuffieldRoute 75 in Suffield 01977-01-011977current Former portion of Route 190 renumbered because of I-190 in Massachusetts
Route 169 —— —— —01951-01-011951
Route 169 38.2561.56 Route 2 / Route 32 / Town Street (SR 642) in NorwichMA 169 in Woodstock ——
Route 171 —— —— —01941-01-011941
Route 171 20.7033.31 I-84 in UnionUS 44 in Putnam 01959-01-011959[6]current
Route 172 4.457.16 I-84 in SouthburyRoute 67 in Southbury ——
Route 173 6.179.93 US 5 / Route 15 in NewingtonSouth Main Street in West Hartford 01932-01-011932[9]current
Route 174 3.185.12 Route 71 in New BritainRoute 176 in Newington ——
Route 175 6.199.96 Route 71 in New BritainRoute 99 in Wethersfield 01932-01-011932[9]current
Route 176 4.146.66 US 5 / Route 15 in NewingtonNewington Avenue at Newington–Hartford town line 01932-01-011932[9]current
Route 176A —— —— —01969-01-011969
Route 177 12.5720.23 Route 10 in PlainvilleUS 44 in Canton 01932-01-011932[4]current
Route 178 6.8911.09 Route 185 in BloomfieldRoute 159 in Windsor ——
Route 179 16.5026.55 Route 4 in BurlingtonRoute 20 in Hartland ——
Route 180 —— —— —01935-01-011935 Proposed but never built
Route 181 7.8412.62 US 44 in BarkhamstedRoute 20 in Hartland ——
Route 181A —— —— —01962-01-011962 Possibly never signed
Route 182 3.816.13 US 44 in NorfolkRoute 182A / Route 183 in Colebrook ——
Route 182A 2.093.36 Route 182 in ColebrookRoute 182 / Route 183 in Colebrook ——
Route 183 19.0630.67 Route 4 in TorringtonMA 183 in Norfolk 01932-01-011932[4]current
Route 184 —— —— —01963-01-011963
Route 184 15.6625.20 I-95 in GrotonRoute 216 / Providence–New London Turnpike (SR 626) in North Stonington ——
Route 185 6.3610.24 US 202 / Route 10 in SimsburyRoute 189 in West Hartford 01932-01-011932[3]current
Route 186 3.575.75 Route 190 in SomersMA 186 in Somers 01932-01-011932[3]current
Route 187 19.7431.77 US 44 in HartfordMA 187 in Suffield ——
Route 188 15.9225.62 Route 34 in SeymourRoute 63 in Middlebury ——
Route 189 20.3232.70 US 44 in HartfordMA 189 in Granby 01932-01-011932[2]current
Route 190 28.2745.50 Route 75 in SuffieldRoute 171 in Union ——
Route 190A —— —— 01961-01-01196101964-01-011964
Route 191 9.3014.97 US 5 in East WindsorRoute 190 in Enfield 01932-01-011932[3]current
Route 192 3.495.62 Route 190 in EnfieldMA 192 in Enfield ——
Route 193 6.6310.67 Route 12 in ThompsonRoute 193 in Thompson 01932-01-011932[2]current
Route 194 3.675.91 US 5 in South WindsorRoute 30 in South Windsor ——
Route 195 15.9125.60 Route 66 in WindhamRoute 74 in Tolland ——
Route 196 5.388.66 Route 151 in HaddamRoute 66 in East Hampton 01932-01-011932[3]current
Route 197 10.9717.65 Route 171 in UnionMA 197 in Thompson ——
Route 198 19.2230.93 US 6 in ChaplinMA 198 in Woodstock 01932-01-011932[9]current
Route 199 4.627.44 Route 67 in RoxburyRoute 47 in Washington ——
Route 200 1.873.01 Route 12 in ThompsonRoute 193 in Thompson ——
Route 201 20.1032.35 Route 184 in StoningtonRoute 12 in Griswold ——
Route 202 —— —— —01935-01-011935 Renumbered because of US 202
Route 203 5.328.56 Route 32 in WindhamUS 6 in Windham 01932-01-011932[9]current
Route 205 3.816.13 Route 12 in PlainfieldRoute 169 in Brooklyn ——
Route 207 16.0125.77 Route 85 in HebronRoute 97 in Sprague 01932-01-011932[9]current
Route 209 2.934.72 Route 109 in MorrisUS 202 in Litchfield ——
Route 211 —— —— —01950-01-011950
Route 213 6.6610.72 Route 156 in WaterfordUS 1 in New London 01932-01-011932[4]current
Route 214 7.3011.75 Route 12 in LedyardRoute 2 / Foxwoods Boulevard (SR 680) in Ledyard ——
Route 215 4.657.48 US 1 in GrotonUS 1 in Groton ——
Route 216 2.784.47 Route 49 in North StoningtonRI 216 in North Stonington ——
Route 217 3.846.18 Route 66 in MiddlefieldRoute 372 in Cromwell ——
Route 218 7.0011.27 US 44 in West HartfordRoute 159 in Windsor ——
Route 219 14.9824.11 US 202 in New HartfordRoute 20 in Granby ——
Route 220 5.809.33 US 5 in EnfieldMA 220 in Enfield ——
Route 222 8.0813.00 US 6 in ThomastonRoute 118 in Harwinton ——
Route 229 5.949.56 West Street in SouthingtonUS 6 in Bristol ——
Route 234 6.9511.18 Route 27 in StoningtonUS 1 in Stonington ——
Route 243 6.7010.78 Route 115 / Division Street (SR 853) in AnsoniaRoute 63 in New Haven ——
Route 244 5.729.21 Route 198 in EastfordRoute 97 in Pomfret ——
Route 254 8.4113.53 Route 8 / Waterbury Road (SR 848) in ThomastonRoute 118 in Litchfield ——
Route 262 9.3715.08 US 6 in WatertownUS 6 in Plymouth ——
Route 263 6.2310.03 Route 272 in GoshenUS 44 in Winchester ——
Route 272 17.9728.92 Route 4 in TorringtonNorfolk Road at the Massachusetts state line in Norfolk ——
Route 275 4.156.68 Route 31 in CoventryRoute 195 in Mansfield ——
Route 286 3.605.79 Route 74 in EllingtonRoute 83 in Ellington ——
Route 287 3.365.41 Route 176 in NewingtonRoute 3 in Wethersfield ——
Route 289 5.138.26 Route 87 in LebanonRoute 32 in Windham ——
Route 291 —— —— —— Now I-291
Route 302 7.9612.81 Route 53 in BethelRoute 25 in Newtown ——
Route 305 3.425.50 Route 187 in BloomfieldRoute 75 in Windsor ——
Route 309 4.747.63 Route 179 in CantonRoute 167 in Simsbury ——
Route 313 6.8511.02 Route 67 in SeymourRoute 243 in Woodbridge ——
Route 314 2.073.33 US 5 / Route 15 in WethersfieldRoute 99 in Wethersfield ——
Route 315 1.953.14 US 202 / Route 10 in SimsburyRoute 189 in Simsbury ——
Route 316 6.049.72 Route 66 in HebronUS 6 in Andover ——
Route 317 6.109.82 Route 67 in RoxburyUS 6 in Woodbury ——
Route 318 3.145.05 US 44 in BarkhamstedRoute 219 in Barkhamsted ——
Route 319 2.834.55 Route 190 in StaffordRoute 19 in Stafford ——
Route 320 7.0511.35 Route 195 in MansfieldI-84 in Willington ——
Route 322 9.8015.77 Route 69 in WolcottI-691 in Southington ——
Route 334 4.407.08 Route 188 in SeymourRoute 115 in Ansonia ——
Route 337 4.917.90 US 1 in New HavenRoute 142 in East Haven ——
Route 341 15.9725.70 Bog Hollow Road at the New York state line in KentUS 202 in Washington 01932-01-011932[4]current
Route 343 1.502.41 NY 343 in SharonRoute 4 / Route 41 in Sharon 01932-01-011932[7]current
Route 349 4.176.71 Shennecossett Road in GrotonI-95 in Groton ——
Route 354 7.3711.86 Route 85 in ColchesterRoute 82 in Salem ——
Route 361 3.545.70 Route 41 in SharonSharon Road at the New York state line in Salisbury ——
Route 364 4.567.34 Route 120 in SouthingtonRoute 71 in Berlin ——
Route 372 15.1224.33 East Main Street at Bristol–Plainville town lineRoute 99 in Cromwell ——

Special Service Roads
Main article: List of Special Service Roads in Connecticut

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.

State Roads
Main article: List of State Roads in Connecticut

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:

History

1913 trunk line system
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

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

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
Main article: 1932 state highway renumbering (Connecticut)

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

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


References
  1. Connecticut State Numbered Routes and Roads as of December 31, 2014 Archived September 5, 2015, at the Wayback Machine
  2. "Road Conditions in Connecticut". The Hartford Daily Courant. August 6, 1932. p. 13. Retrieved December 24, 2019 – via Newspapers.com.
  3. "Road Conditions in Connecticut". The Hartford Daily Courant. May 27, 1932. p. 14. Retrieved December 24, 2019 – via Newspapers.com.
  4. "Road Conditions in Connecticut". The Hartford Daily Courant. September 17, 1932. p. 18. Retrieved December 24, 2019 – via Newspapers.com.
  5. "Road Conditions in Connecticut". The Hartford Daily Courant. July 9, 1932. p. 10. Retrieved December 24, 2019 – via Newspapers.com.
  6. "State Highway Route Numbers to be Changed". The Naugatuck Daily News. September 25, 1958. p. 9. Retrieved December 24, 2019 – via Newspapers.com.
  7. "Road Conditions in Connecticut". The Hartford Daily Courant. June 25, 1932. p. 18. Retrieved December 24, 2019 – via Newspapers.com.
  8. "Road Conditions in Connecticut". The Hartford Daily Courant. July 23, 1932. p. 9. Retrieved December 24, 2019 – via Newspapers.com.
  9. "Road Conditions in Connecticut". The Hartford Daily Courant. June 5, 1932. p. 29. Retrieved December 24, 2019 – via Newspapers.com.



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