Connecticut Route 80 is a 25.9 mile highway that runs through south-central Connecticut. The west end is at CT 17 in Quinnipiac Meadows neighborhood of New Haven, and the east end is at CT 154 in Deep River. Route 80 runs within 5 miles of many town squares- including Downtown New Haven.
Route 9 is a 40.89-mile (65.81 km), four-lane freeway beginning in Old Saybrook and ending at I-84 near the Farmington–West Hartford town line. It connects the Eastern Coastline of the state along with the Lower Connecticut River Valley to Hartford and the Capital Region.
Route 2 is a 58.03-mile (93.39 km) state highway in Hartford and New London counties in Connecticut. It is a primary state route, with a limited-access freeway section connecting Hartford to Norwich and following surface roads to Stonington. The entire freeway section of Route 2 is also known as the Veterans of Foreign Wars Memorial Highway.
Interstate 95 (I-95) is the main north–south Interstate Highway on the East Coast of the United States, running in a general east–west compass direction for 111.57 miles (179.55 km) in Connecticut, from the New York state line to the Rhode Island state line. I-95 from Greenwich to East Lyme is part of the Connecticut Turnpike, during which it passes through the major cities of Stamford, Bridgeport, and New Haven. After leaving the turnpike in East Lyme, I-95 is known as the Jewish War Veterans Memorial Highway and passes through New London, Groton, and Mystic, before exiting the state through North Stonington at the Rhode Island border.
Route 33 is a 14.41-mile (23.19 km), secondary north–south state highway in the U.S. state of Connecticut, from Westport to Ridgefield.
State Route 25 (SR 25) is part of the system of numbered highways in Maine. It runs for 42.4 miles (68.2 km) across the south central part of the state. SR 25 begins at the New Hampshire border near Porter, where it continues west as New Hampshire Route 25 (NH 25). Its eastern terminus is in downtown Portland at the intersection of Park Avenue and State Street. Administratively, it shares a terminus with SR 22 and SR 77.
Connecticut Route 10 is a state highway that runs between New Haven and the state line near Granby. It continues north of the state line as Massachusetts Route 10, which in turn continues directly to New Hampshire Route 10.
Route 152 is a state highway in Connecticut running entirely within the town of Orange. It serves to connect the town center with U.S. Route 1 and Route 34.
Route 77 is a state highway in southern Connecticut. It is a state-designated scenic road and runs from the Guilford town green, through North Guilford, into the town center of Durham.
Route 81 is a state highway in Connecticut from Clinton center through Killingworth center to the village of Higganum in the town of Haddam.
Route 154 is a state highway in Connecticut running for 28.24 miles (45.45 km). It serves as one of the main thoroughfares in the town of Old Saybrook, intersecting twice with U.S. Route 1. North of I-95, Route 154 runs parallel to Route 9, along to the west bank of the Connecticut River. The route ends in Middletown at Route 9.
Route 199 is a rural state highway in western Connecticut, running from Roxbury to Washington.
U.S. Route 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.
Route 117 is a state highway in southeastern Connecticut, running from Groton to Preston. Route 117 is designated the Colonel Ledyard Highway from its intersection with Route 184 in Groton to the Ledyard-Preston town line.
Route 130 is a state highway in southwestern Connecticut, running from Fairfield to Stratford, generally parallel to I-95.
Route 136 is a state highway in southwestern Connecticut, running from Darien to Easton. The route was initially established in 1932 to serve the beach communities between Darien and Southport. Its eastern end was relocated in 1963 to head northeast from Westport to Easton instead.
Route 145 is a state highway in the western part of the Connecticut River Estuary region of Connecticut. It connects Clinton center, through the village of Winthrop, to the town of Chester.
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 155 is a Connecticut state highway running entirely within the city of Middletown. It is primarily used as a connector between the Route 9 expressway and Route 17 towards Durham.
Route 156 is a Connecticut state highway running from East Haddam to Waterford.
Route 153 in Westbrook 
I-95 / Conn. Turnpike in Old Saybrook 
US 1 in Old Saybrook 
