Interstate 691 (I-691) is an auxiliary Interstate Highway in Connecticut beginning at I-91 in Meriden and ending at I-84 near the Cheshire–Southington town line. According to the Federal Highway Administration, it is 8.38 miles (13.49 km) in length; however, the Connecticut Department of Transportation (CTDOT) includes the 0.54 miles of the exit ramp that I-691 uses to the merge with westbound I-84, making their recorded length 8.92 miles (14.36 km) long.
Route 66 is an east-west state highway running from Meriden to Windham, serving as an alternate east–west route to US 6 through east-central Connecticut.
Route 70 is a 10.92-mile-long (17.57 km) state highway in the U.S. state of Connecticut, connecting the towns of Cheshire and Meriden. The western half of the route is an important link between the Greater New Haven and the Greater Waterbury areas and is part of the state primary highway system. It runs in a “U” Shaped Pattern.
Route 64 is a Connecticut state highway connecting the towns of Woodbury and Waterbury via Middlebury.
Route 121 is a state highway in southern Connecticut running from U.S. Route 1 in Milford to Route 34 near the Orange-Derby line.
Route 43 is a Connecticut state highway. It is 5.06 miles (8.14 km) long and runs north–south within the town of Cornwall. It connects the town center with the village of Cornwall Hollow near the Canaan town line.
Route 103 is a state highway in Connecticut running from the Quinnipiac Meadows neighborhood in New Haven, through the Montowese area of North Haven, ending at the town center of North Haven.
Route 45 is a Connecticut state highway from US 202 in Washington to US 7 in Cornwall, in the rural northwest of the state. It is 10.29 miles (16.56 km) long and runs north–south.
Route 47 is a Connecticut state highway from US 6 in Woodbury to US 202 in Washington, in the western south-central part of the state. It is 12.27 miles (19.75 km) long and runs roughly northwest-southeast, signed north–south.
U.S. Route 5 (US 5), a north–south United States Numbered Highway that is generally paralleled by Interstate 91 (I-91), begins at the city of New Haven in Connecticut and heads north through western Massachusetts and eastern Vermont to the international border with Canada. Within Connecticut, US 5 proceeds north from New Haven and passes through Meriden and Hartford toward Springfield, Massachusetts.
Route 203 is a state highway in eastern Connecticut, running entirely within the town of Windham.
Route 163 is a state highway in southeastern Connecticut running from Montville to Bozrah.
Route 164 is a minor state highway in southeastern Connecticut, United States, running from Route 2 in Preston through the village of Preston City to Route 138 in Griswold just south of the borough of Jewett City.
Route 132 is a state highway in western Connecticut, running from Route 47 in Woodbury, through Bethlehem center, to Route 63 in Watertown.
Route 124 is a state highway in southwestern Connecticut running from downtown Darien through the center of New Canaan to the state line in Scotts Corners, New York.
Route 147 is a state highway in central Connecticut running from Durham to Middlefield.
Route 153 is a Connecticut state highway in the Connecticut River valley running from U.S. Route 1 in Westbrook center to Route 154 in Essex Village in the town of Essex.
Route 177 is a state highway in central Connecticut, running from Plainville to Canton.
Route 196 is a Connecticut state highway in the lower Connecticut River valley, running from Haddam to the town center of East Hampton.
Route 322 is a state highway in west central Connecticut, running from Wolcott to Southington.
Route 322 in Southington 
Route 10 in Southington 
