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Connecticut Route 10 is a state highway that runs between New Haven and the state line near Granby.

Connecticut Route 10 marker

Route 10
Map of Connecticut with CT 10 highlighted in red
Route information
Maintained by ConnDOT
Length54.28 mi[1] (87.36 km)
Major junctions
South end I-95 / Conn. Turnpike in New Haven
  US 1 in New Haven
I-691 in Cheshire
I-84 in Southington
US 6 in Farmington
US 44 / US 202 in Avon
North end Route 10 / US 202 at Granby
CountiesNew Haven, Hartford
Highway system
  • Routes in Connecticut
Route 9ARoute 11


Route descriptionEdit

Route 10 begins at Interstate 95 (I-95) as Ella T. Grasso Boulevard in the city of New Haven. It proceeds northward, crossing US 1 and has a brief concurrency with Route 34. It then turns northwest onto Whalley Avenue, then north onto Fitch Street as Whalley Avenue becomes Route 63. On Fitch Street, it passes by Southern Connecticut State University, then turns east onto Arch Street after entering the town of Hamden. It then turns north onto Dixwell Avenue, and intersects the Wilbur Cross Parkway (Route 15) at Exit 60. In the center of Hamden, it turns onto Whitney Avenue. Proceeding northward, it encounters the northern end of the Route 40 freeway and the western end of Route 22 . In Cheshire, it meets the eastern end of Route 42, and has a brief triplex with Routes 68 and 70. At the north end of town is a junction with I-691 at Exit 3. It then enters Southington, where it has a grade separated intersection with Route 322 and a connection to I-84 east at Exit 29 via SR 597. After passing through the village of Plantsville, it has a junction with the northern end of Route 120 just before downtown, and then becomes Queen Street, a major retail strip. Along Queen Street, it crosses I-84 at Exit 32. At the Plainville town line, it meets the southern end of Route 177. It then meets Route 372, which leads to eastbound access to the Route 72 freeway via Hooker Street (SR 511). After passing under Route 72, Route 10 enters Farmington, then has a grade separated intersection with US 6. Most access to US 6 is provided by Scott Swamp Road (SR 532), except for a direct connection from Route 10 north to US 6 east. In the center of Farmington, it passes by Miss Porter's School before intersecting with Route 4. It then enters Avon, where it turns west along a brief concurrency with US 44. In the center of town, it turns north along with US 202 East, which leaves its concurrency with US 44 and duplexes with Route 10 to Westfield, Massachusetts. In Simsbury, there are junctions with the western end of Route 185, the northern end of Route 167, and the western end of Route 315. In Granby, there is a brief concurrency with Route 189, and a junction with Route 20. About 3.5 miles later, Routes 10 and 202 cross the Massachusetts state line into the town of Southwick.

The Southington section of Route 10 was dedicated on Aug. 6, 1960 (and rededicated on Oct. 6, 2007) as the Louis G. Tolles Memorial Highway in honor of the late Southington native and leader of the Connecticut State Grange (1885–1956).


Route 10 originally followed a different route south of Granby, Connecticut, starting in the town of Old Saybrook[2] instead of at its current New Haven terminus. It moved to its current alignment along the Connecticut section of the College Highway in 1932, with the former alignment becoming the original Route 9. The original routing is now Routes 154, 99, and 189. During the 1960s Connecticut planned on building an expressway along the Route 10 corridor, but the only part of this plan actually constructed was Route 40 in the Mount Carmel area of Hamden, as well as several exit ramps connecting Route 10 to I-84 southwest of Hartford.

Junction listEdit

New HavenNew Haven0.000.00  I-95 – New London, New York CityExit 44 on (I-95)
1.292.08  US 1 (Boston Post Road/Columbus Avenue)
1.873.01  Route 34 east (Legion Avenue)Eastern end of CT 34 overlap
2.203.54  Route 34 west (Derby Avenue)Western end of CT 34 overlap
3.425.50  Route 63 north (Whalley Avenue)
Hamden7.0311.31  Route 15 (Wilbur Cross Parkway.) – Hartford, New York CityExit 60 on (Route 15 / Wilbur Cross Parkway)
10.0516.17   Route 40 east to I-91 – North HavenTo Exit 10 on (I-91)
10.2716.53  Route 22 east – North Haven, Northford, North Branford, Guilford
Cheshire15.7725.38  Route 42 west (North Brooksvale Road)
16.9427.26   Route 68 / Route 70 east – Meriden, WallingfordSouth end of CT 68/70 overlap
17.0927.50   Route 68 / Route 70 west – Prospect, WaterburyNorth end of CT 68/70 overlap
20.9933.78  I-691 – Meriden, WaterburyExit 3 on (I-691)
HartfordSouthington21.5534.68  Route 322 – Marion, Wolcott, MeridenGrade separated
22.2535.81  I-84 east – HartfordSR 597; Exit 29 on I-84 west
23.2537.42West Main St.   To I-84To Exit 30 on (I-84)
24.2839.07   Route 120 south (Meriden Avenue) to Route 364
26.7543.05  I-84 – Hartford, WaterburyExit 32 on (I-84)
Plainville28.0945.21  Route 177 north (Town Line Road)
29.8247.99    Route 372 to I-84 / Route 72 east – New Britain, Plainville Business District
Farmington32.3552.06  US 6 – Bristol, Terryville, Plymouth, West Hartford, HartfordOne-way northbound/eastbound connector. Other connections use SR 552
33.8554.48   Route 4 to I-84 – West Hartford, Hartford, Unionville
Avon39.4263.44  US 44 east – West Hartford, HartfordEastern terminus of US 44 overlap
40.1664.63   US 44 west / US 202 west – Canton, WinstedWestern terminus of US 44 overlap; western terminus of US 202 overlap
Simsbury42.9969.19  Route 185 east – Bloomfield
44.7572.02   Route 167 south to Route 309 – West Simsbury
46.8175.33  Route 315 east – Tariffville
Granby50.8481.82  Route 189 south – BloomfieldSouthern terminus of CT 189 overlap; Old Route 10 continues south on Route 189
50.9281.95   Route 20 / Route 189 north – North Granby, East GranbyNorthern terminus of CT 189 overlap
54.2887.36   Route 10 north / US 202 – Westfield, Holyoke, NorthamptonState line
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See alsoEdit


  1. ^ Connecticut State Numbered Routes and Roads as of December 31, 2004 Archived September 27, 2011, at the Wayback Machine (PDF)
  2. ^ Oglesby, Scott (2004-09-04). "Connecticut New England Interstates: NE 10". Connecticut Roads. Retrieved 2006-07-10.

External linksEdit