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U.S. Route 1 in Connecticut

From Wikipedia, the free encyclopedia

U.S. Route 1
Route information
Maintained by CTDOT
Length117.37 mi[1] (188.89 km)
Major junctions
South end US 1 in Port Chester, NY
Major intersections US 7 in Norwalk
Route 8 in Bridgeport
Route 34 in New Haven
Route 9 in Old Saybrook
Route 32 in New London
North end US 1 in Westerly, RI
CountiesFairfield, New Haven, Middlesex, New London
Highway system
  • Connecticut State Highway System
I-691 Route 2

U.S. Route 1 (US 1) in the U.S. state of Connecticut is a major east–west United States Highway along Long Island Sound. It has been replaced by Interstate 95 as a through route, which it closely parallels, and now primarily serves as a local business route. Despite its largely east–west orientation, it is part of a north–south route, and is mostly signed north–south.

Most of US 1 through Connecticut encompasses its predecessor, the Boston Post Road, and in many towns it is still named Boston Post Road (or Post Road).

Route description

The Mystic River Bascule Bridge carrying US 1 over the Mystic River in Connecticut
The Mystic River Bascule Bridge carrying US 1 over the Mystic River in Connecticut

US 1 in Connecticut largely parallels Interstate 95 and has many interchanges with it. The route passes through each city and town of Connecticut bordering the Long Island Sound (in addition to the town of Orange).

From Greenwich to Branford, US 1 is mostly a 4-lane or 6-lane principal arterial road (with some 2-lane sections in dense areas). From Branford to Stonington, US 1 it a 2-lane or 4-lane minor arterial road.

US 1 is known as Boston Post Road or Post Road for the majority of its length, but it also encompasses other local street names. The route is known as Putnam Avenue in Greenwich, Tresser Boulevard, West Main Street and East Main Street in Stamford, Connecticut Avenue in parts of Norwalk, Boston Avenue in parts of Bridgeport, New London Road in parts of Groton. In Stonington, the route is known as Stonington Road, South Broad Street, and West Broad Street. US 1 is also known as Main Street in Branford, and Clinton.

Overlap with I-95

US 1 is concurrent with I-95 in two sections, both of which are river crossings. The western concurrency is between exits 68 and 70 from Old Saybrook to Lyme, where the two routes cross the Connecticut River via the Raymond E. Baldwin Bridge. The eastern concurrency is between exits 83 and 85 from New London to Groton, where the routes cross the Thames River via the Gold Star Memorial Bridge.

Route 1's two other major bridge crossings closely parallel the I-95 crossings of those rivers. The Washington Bridge over the Housatonic River, connecting Milford and Stratford, as well as the Tomlinson Lift Bridge over the Quinnipiac River in New Haven, is a short distance away from I-95's Moses Wheeler and Pearl Harbor Memorial Bridges, respectively.

Route 1 also forms a frontage road for I-95 in parts of Fairfield, Stratford, and New London.


US 1 generally follows the old Boston Post Road and turnpike roads built to replace it. Specifically, the Greenwich Road, chartered in 1792, was the part in Greenwich, and became part of the longer New York-to-Fairfield Connecticut Turnpike (not to be confused with the contemporary Connecticut Turnpike) in 1806. The New Haven and Milford Turnpike (1802) continued from Milford to New Haven, and the New London and Lyme Turnpike (1807) connected Old Lyme with New London.

Route 51

Route 51 marker

Route 51

LocationOld Lyme to East Lyme
Length9.4 mi (15.1 km)

US 1 was originally built where it currently exists in Old Lyme and East Lyme.[2] However, from 1949 to 1976, US 1 existed where Interstate 95 (I-95) currently exists in Old Lyme and East Lyme. From 1962 to 1976, this stretch of road was Route 51, which traveled for 9.4 miles (15.1 km) through Old Lyme and East Lyme and was known as the Boston Post Road. In 1976, US 1 returned to the 9.4-mile (15.1 km) stretch of road, thus eliminating the need for Route 51.[3]

Major intersections

Byram River0.000.00
US 1 south to NY 120A
Continuation into New York
New York–Connecticut state line
FairfieldRiverside4.837.77 I-95 – New Haven, New York CityExit 5 on I-95 (Connecticut Turnpike)
Route 137 (Washington Boulevard) to I-95 – Transportation Center, UConn
8.6013.84 Route 106 north (Courtland Avenue) / I-95 south – Glenbrook, New York CitySouthern terminus of Route 106
8.6613.94 I-95 north – New HavenExit 9 on I-95 (Connecticut Turnpike)
Community of Darien11.1717.98 I-95 – New Haven, New York CityExit 11 on I-95 (Connecticut Turnpike); southbound entrance is via Ledge Road
11.5618.60 Route 136 east (Tokeneke Road) – Rowayton, South NorwalkWestern terminus of Route 136
11.6618.76 Route 124 north (Mansfield Avenue) – New CanaanSouthern terminus of Route 124
Town of Darien12.51–
I-95 – New Haven, New York CityExit 13 on I-95 (Connecticut Turnpike); northbound entrance is via Old Kings Highway
Norwalk14.2422.92 I-95 – New Haven, New York CityExit 14 on I-95 (Connecticut Turnpike); northbound entrance is via Scribner Avenue
US 7 to I-95 – New York City, Bridgeport
Exit 1 on US 7
Route 123 north (Main Street) to US 7 north
Southern terminus of Route 123
16.5426.62 Route 53 north (East Avenue)Southern terminus of Route 53
Community of Westport19.2230.93 Route 33 – Wilton, Saugatuck, Westport Station
19.8331.91 Route 136 (Compo Road) – Easton, Saugatuck
Town of Westport20.8033.47Sherwood Island Connector (SSR 476)Sherwood Island State Park
Southport23.3137.51 I-95 – New York City, New HavenExit 19 on I-95 (Connecticut Turnpike); Access via local roads except northbound entrance
Fairfield25.5141.05 Route 135 north (North Benson Road)Southern terminus of Route 135
25.8341.57 Route 130 east (Post Road)Western terminus of Route 130
I-95 – New Haven, New York CityExit 23 on I-95 (Connecticut Turnpike)
27.1643.71 I-95 – New Haven, New York CityExit 24 on I-95 (Connecticut Turnpike); Access to I-95 south via local roads
28.1545.30 Route 58 north – Easton, Redding, BethelSouthern terminus of Route 58
Bridgeport28.6846.16 Route 59 north – Easton, Upper StepneySouthern terminus of Route 59

To Route 25 / Route 8
Access via Chopsey Hill Road
31.4350.58 Route 127 north (East Main Street) – TrumbullSouthern terminus of Route 127
Community of Stratford34.0354.77 Route 108 north (Nichols Avenue) – Trumbull, HuntingtonSouthern terminus of Route 108
34.2055.04 Route 113 (Main Street) – Paradise Green, Shelton
34.8656.10 Route 130 west – BridgeportEastern terminus of Route 130
I-95 south – New York City, New HavenExit 33 on I-95 north (Connecticut Turnpike)
35.0656.42 Route 110 north (East Main Street) – SheltonSouthern terminus of Route 110
Housatonic River35.27–
Washington Bridge
New HavenMilford36.3158.44 I-95 – New Haven, New York CityExit 34 on I-95 (Connecticut Turnpike)
37.3360.08 Route 162 east – Downtown MilfordWestern terminus of Route 162
To Route 15 – New York City, Hartford
Access via Milford Parkway
39.2063.09 Route 121 north (North Street) – OrangeSouthern terminus of Route 121
40.0164.39 I-95 – New Haven, New York CityExits 39A-B on I-95 (Connecticut Turnpike)
Orange42.2567.99 Route 152 north (Orange Center Road) – Orange CenterSouthern terminus of Route 152
43.2069.52 Route 114 north (Racebrook Road) – WoodbridgeSouthern terminus of Route 114
43.9570.73 Route 162 west (Bull Hill Lane) – West HavenEastern terminus of Route 162
West Haven46.0674.13 Route 122 (Forest Road / Campbell Avenue) – Downtown West Haven, Westville
New Haven46.6475.06
Route 10 (Ella Grasso Boulevard) to I-95 – City Point, Hamden

To I-91 north / I-95 – Hartford, New London, New York City
Access via Water Street to Route 34 (Oak Street Connector)
Tomlinson Lift Bridge over the Quinnipiac River
50.2580.87 Route 337 (Townsend Avenue) – Lighthouse Point ParkTo Tweed-New Haven Airport
East Haven50.65–
I-95 – New London, New HavenExit 51 on I-95 (Connecticut Turnpike)
51.7983.35 Route 142 east (Hemingway Avenue) – MomauguinWestern terminus of Route 142
52.0683.78 Route 100 north (Main Street)Southern terminus of Route 100
Branford53.8586.66 Route 142 west (Short Beach Road) – Short BeachEastern terminus of Route 142
53.9686.84 I-95 south – New York CityExit 53 on I-95 north (Connecticut Turnpike); Access via Branford Connector
54.0687.00 Route 146 east (Main Street) – Stony CreekWestern terminus of Route 146
56.8291.44 I-95 – New London, New HavenExit 55 on I-95 (Connecticut Turnpike)
57.0691.83 Route 139 north (North Branford Road) – North Branford, FoxonSouthern terminus of Route 139
Guilford59.2195.29 Route 22 west (Notch Hill Road) – Foxon, North BranfordEastern terminus of Route 22
61.7699.39 I-95 – New Haven, New LondonExit 57 on I-95 (Connecticut Turnpike)
63.07101.50 Route 77 (Church Street) – Guilford, North Guilford
64.35103.56 Route 146 west (Boston Street) – Guilford CenterEastern terminus of Route 146
Madison67.85109.19 Route 79 (Durham Road) – North Madison, Durham
MiddlesexClinton71.67115.34 Route 81 (High Street) – Killingworth, Middletown
72.52116.71 Route 145 (Old Post Road / Old Westbrook Road) – Winthrop
Route 153 (Essex Road) to I-95 – Essex, Ivoryton
Old Saybrook78.19125.83
Route 166 (Spencer Plain Road) to I-95
79.52127.98 Route 154 north (Old Boston Post Road) – Shore Points, Cornfield Point, Knollwood BeachSouthern terminus of Route 154
80.52129.58 Route 154 south (Main Street) – Shore Points, Saybrook PointSouthern terminus of Route 154 concurrency
Route 154 north (Middlesex Turnpike) to I-95 south – Essex, Haddam, New Haven
Northern terminus of Route 154 concurrency
81.98131.93 I-95 north – New LondonSouthern terminus I-95 concurrency; Exit 68 on I-95 south (Connecticut Turnpike)
Route 9 north – Essex, HartfordExit 69; southern terminus of Route 9
Connecticut River82.15–
Raymond E. Baldwin Bridge
New LondonOld Lyme82.86–
I-95 north / Route 156 south (Shore Road) – New LondonNorthern terminus of I-95 concurrency; Exit 70 on I-95 (Connecticut Turnpike) southern terminus of Route 156 concurrency
83.53134.43 Route 156 north (Neck Road) – HamburgNorthern terminus of Route 156 concurrency
East Lyme92.46148.80 Route 161 (Chesterfield Road / Flanders Road) – Chesterfield, Niantic
92.97149.62 I-95 – New Haven, New LondonExit 75 on I-95 (Connecticut Turnpike)
Waterford97.36156.69 Route 156 west (Rope Ferry Road) – Flanders, NianticEastern terminus of Route 156
New London98.70158.84 Route 213 south (Ocean Avenue) – Harkness Memorial State ParkNorthern terminus of Route 213
99.99160.92 Route 85 north (Broad Street) – Waterford, HartfordSouthern terminus of Route 85
100.89162.37 Route 32 north – NorwichExit 84N on I-95; US 1 acts as frontage roads for I-95
101.03162.59 I-95 south – New HavenSouthern terminus of I-95 concurrency; Exit 83 on I-95
Thames River101.17–
Gold Star Memorial Bridge
I-95 north / Route 12 north / Thames Street – Providence, RI, Gales FerryNorthern terminus of I-95 concurrency; Exit 85 on I-95; southern terminus of Route 12
Route 349 (Clarence Sharp Highway) to I-95 north – Providence, RI
Route 117 north (Newtown Road) to I-95 – Ledyard
Southern terminus of Route 117
106.47171.35 Route 215 east (Groton Long Point Road) – Groton Long PointWestern terminus of Route 215
108.98175.39 Route 215 west (Water Street) – Groton Long Point, NoankEastern terminus of Route 215
Mystic River109.12175.61Mystic River Bascule Bridge
Route 27 north (Denison Avenue) to I-95 – Old Mystic
Southern terminus of Route 27
112.48181.02 US 1A north (North Water Street) – Stonington BoroughSouthern terminus of US 1A
113.63182.87 US 1A south (Elm Street) – Stonington BoroughNorthern terminus of US 1A
Route 234 west (Pequot Trail) to I-95 – Old Mystic
Eastern terminus of Route 234
Route 2 west (Liberty Street) to I-95 – Norwich, Hartford
Eastern terminus of Route 2
Pawcatuck River117.37188.89Connecticut–Rhode Island state line
US 1 north – WesterlyBridge; continuation into Rhode Island
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ a b Connecticut Department of Transportation, "Highway Log" (PDF). (1.80 MiB) as of December 31, 2014
  2. ^ Kurumi. "Connecticut US 1". Kurumi. Retrieved November 21, 2020.[self-published source]
  3. ^ Kurumi. "Connecticut Route 51". Kurumi. Kurumi. Retrieved November 21, 2020.[self-published source]

External links

KML is from Wikidata

U.S. Route 1
Previous state:
New York
Connecticut Next state:
Rhode Island
This page was last edited on 22 December 2021, at 18:35
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