U.S. Route 5 (US 5) is a north–south United States Numbered Highway running through the New England states of Connecticut, Massachusetts, and Vermont. Significant cities along the route include New Haven, Connecticut; Hartford, Connecticut; and Springfield, Massachusetts. From Hartford northward to St. Johnsbury, Vermont, the road closely follows the route of the Connecticut River.
Route 15 is a state highway in the U.S. state of Connecticut that runs 83.53 miles (134.43 km) from a connection with New York's Hutchinson River Parkway in Greenwich, Connecticut, to its northern terminus intersecting with Interstate 84 (I-84) in East Hartford, Connecticut. Route 15 consists of four distinct sections: the Merritt Parkway, the Wilbur Cross Parkway, most of the Berlin Turnpike, and part of the Wilbur Cross Highway. The unified designation was applied to these separate highways in 1948 to provide a continuous through route from New York to Massachusetts. The parkway section of Route 15 is often referred to locally as "The Merritt".
U.S. Route 1A (US 1A) is the name of several highways found in the United States.
Connecticut Route 80 is a 25.9 mile highway that runs through south-central Connecticut. The route runs from Interstate 91 (I-91) in Quinnipiac Meadows neighborhood of New Haven east to Route 154 in Deep River. Route 80 runs within 5 miles of many town squares- including Downtown New Haven.
Route 40, also known as the Mount Carmel Connector, is a 3.08-mile (4.96 km) freeway connecting Interstate 91 and Bailey Road in North Haven, Connecticut to Route 10 in the Mount Carmel neighborhood of Hamden. Route 40 is a four-lane freeway with one intermediate exit leading to/from U.S. Route 5 in North Haven. It crosses over Route 15 but does not have an interchange with it. This is the only place in the state where two freeways cross without an interchange.
Route 22 is a 14.07-mile-long (22.64 km) secondary state route within the U.S. state of Connecticut. Route 22 is an L-shaped road that is signed east–west from Hamden to the western junction of Route 80 in North Branford, and north–south to its eastern terminus in Guilford. It was designated in 1951 as a bypass of New Haven, connecting the Wilbur Cross Parkway and Route 80.
Route 4 is an east–west primary state highway connecting rural Litchfield County to the Greater Hartford area of the U.S. state of Connecticut. It runs 46.72 miles (75.19 km) from the town of Sharon to the town of West Hartford.
Route 67 is a secondary state highway in the U.S. state of Connecticut, from the town of New Milford in the Greater Danbury area to the town of Woodbridge in the outskirts of New Haven. The route runs for 31.00 miles (49.89 km). It generally follows a northwest-southeast path, and is signed north-south.
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 122 is a primary, minor arterial highway in the United States. It begins at Interstate 95 in West Haven, Connecticut. It runs north of West Haven center and roughly follows the path of the West River. It then enters the Westville neighborhood of New Haven and ends at Route 63. Route 122 is 3.51 miles (5.65 km) long.
Route 159 is a 21.14-mile-long (34.02 km) state highway connecting the Hartford and Springfield areas in the U.S. states of Connecticut and Massachusetts. It begins as the northern extension of Main Street in Hartford and proceeds northward along the west bank of the Connecticut River towards Agawam, Massachusetts. The route ends at the junction of Route 147 and Route 75 in Agawam center just south of the West Springfield city line. The route was originally designated as U.S. Route 5A in 1932 and was renumbered to its modern designation in October 1968.
Route 75 in the U.S. states of Connecticut and Massachusetts is a 17.5-mile-long (28.2 km) scenic route connecting the Hartford, Connecticut, and Springfield, Massachusetts, areas. The route begins at Route 159 in the town of Windsor, Connecticut, and ends at the junction of Route 159/Route 147 in the city of Agawam, Massachusetts.
The Berlin Turnpike is a 12.17-mile (19.59 km) major thoroughfare carrying U.S. Route 5 and Route 15 in New Haven County and Hartford County in the U.S. state of Connecticut. The road begins one mile south of the Meriden-Berlin town line where Route 15 on the Wilbur Cross Parkway merges with US 5 along North Broad Street in Meriden and terminates at the Hartford city line. The local name of the street varies as it passes through multiple towns.
Route 142 is a state highway in Connecticut that serves as an alternate route of US 1, passing through the village of Short Beach on the Branford shoreline. It starts at US 1 in East Haven and ends at US 1 in Branford, running for 4.27 miles (6.87 km).
Route 150 is a state highway in southern Connecticut running for 9.04 miles (14.55 km) from the village of Northford, in the town of North Branford, through the center of Wallingford, to the village of Yalesville in Wallingford.
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 71 is a north–south state highway in Connecticut, running from Wallingford to West Hartford. It is the main north–south road of Meriden, Berlin and New Britain.
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 123 is a secondary state highway in southwestern Connecticut from Norwalk to the New York state line near the town of Lewisboro.
Route 115 is a Connecticut state highway in the Lower Naugatuck River Valley area, running from Route 34 in Derby to Route 67 in Seymour. The road runs along the east bank of the lower Naugatuck River.
Route 80 in New Haven 
US 5 / Route 22 in North Haven 
