Connecticut's transportation network includes 3 major Interstate highways, 7 U.S. highways, and over 100 state highways, connecting urban centers, rural areas, and neighboring states. The Interstate 95 (I-95), part of the East Coast’s primary corridor, runs along the southern coastline, linking major cities like Stamford and New Haven. Interstate 91 (I-91) provides a north-south route, connecting Hartford to Springfield, Massachusetts. U.S. Route 1 parallels I-95, serving local traffic along the coastline, while State Route 15, also known as the Merritt Parkway, offers a scenic alternative. These highways play a critical role in commuting, commerce, and regional connectivity.
Explore the road map of Connecticut state of USA showing interstate highways, US highways and other road network.
| Interstate Highway | Length (miles) | Major Cities Connected | Key Features | Additional Notes |
|---|---|---|---|---|
| Interstate 84 (I-84) | 97.9 | Danbury, Waterbury, Hartford | East-west route connecting New York to Massachusetts via central Connecticut | Includes the Mixmaster junction in Waterbury; part of the larger I-84 corridor across New England. |
| Interstate 91 (I-91) | 58.0 | Hartford, New Haven | North-south route connecting New Haven to Springfield, Massachusetts | Serves as a major corridor for commerce and commuting; connects to Bradley International Airport. |
| Interstate 95 (I-95) | 111.6 | Stamford, New Haven, New London | Main north-south corridor along Connecticut's coastline | Part of the East Coast's primary interstate system, extending from Florida to Maine. |
| Interstate 395 (I-395) | 54.7 | Norwich, Plainfield | North-south route in eastern Connecticut, connecting I-95 to Massachusetts | Serves eastern rural areas and industrial towns; formerly part of Route 52. |
| Interstate 291 (I-291) | 6.4 | Windsor, South Windsor | Connector route around Hartford | Links I-91 and I-84 to bypass Hartford's city center. |
| Interstate 384 (I-384) | 8.5 | Manchester | Extension of I-84 east of Hartford | Provides access to eastern Connecticut and Rhode Island. |
| Interstate 684 (I-684) | 1.4 (in CT) | Connects Greenwich to New York State | North-south route primarily in New York but briefly enters Connecticut | Serves as a key commuter route to and from New York City. |
| U.S. Highway | Length (miles) | Major Cities/Areas Connected | Key Features | Additional Notes |
|---|---|---|---|---|
| U.S. Route 1 (US 1) | 117.4 | Stamford, New Haven, New London | Runs parallel to I-95 along the southern coastline of Connecticut | Provides local access to coastal towns; historically part of the Boston Post Road. |
| U.S. Route 5 (US 5) | 54.6 | New Haven, Hartford, Enfield | Runs north-south through central Connecticut | Parallels I-91 and serves as a local route for towns along the Connecticut River. |
| U.S. Route 6 (US 6) | 116.3 | Danbury, Waterbury, Hartford, Windham | East-west route connecting New York to Rhode Island through Connecticut | Known as the Grand Army of the Republic Highway; links rural and urban areas. |
| U.S. Route 7 (US 7) | 78.4 | Danbury, New Milford, Litchfield Hills | North-south route in western Connecticut | Serves as a scenic route through the Housatonic Valley and links with Vermont. |
| U.S. Route 44 (US 44) | 106.4 | Hartford, Avon, Putnam | East-west route connecting Hartford to Rhode Island | Traverses the scenic Farmington Valley and eastern Connecticut. |
| U.S. Route 202 (US 202) | 75.3 | Danbury, Litchfield, Torrington | Loops through western Connecticut, intersecting other highways | Provides access to rural and suburban communities. |
| U.S. Route 302 (US 302) | Short section | Bethel | Local connector in Fairfield County | Primarily serves local traffic in a suburban area. |
| State Highway | Length (miles) | Major Cities/Areas Connected | Key Features | Additional Notes |
|---|---|---|---|---|
| State Route 2 | 58.0 | Hartford, Norwich | East-west expressway connecting Hartford to southeastern Connecticut | Critical route for access to the shoreline and suburban communities. |
| State Route 8 | 67.0 | Bridgeport, Waterbury, Torrington | North-south expressway in western Connecticut | Key commuting route through the Naugatuck Valley. |
| State Route 9 | 40.9 | Middletown, Old Saybrook | North-south expressway linking the Hartford region to the coastline | Serves as an alternative to I-91 and I-95 for inland-coast travel. |
| State Route 15 (Merritt Parkway/Wilbur Cross Parkway) | 37.3 | Greenwich, New Haven | Historic scenic parkway with limited access | Famous for its unique bridges and landscaping. |
| State Route 25 | 28.0 | Bridgeport, Monroe | North-south highway serving southwestern Connecticut | Links urban areas with rural communities. |
| State Route 34 | 24.4 | New Haven, Derby | East-west route connecting I-95 to inland areas | Provides critical suburban access and links with Route 8. |
| State Route 66 | 25.9 | Middletown, Willimantic | Major east-west highway in central Connecticut | Important for regional connectivity. |
| State Route 69 | 35.4 | New Haven, Bristol | North-south route linking southern and central Connecticut | Serves local traffic and suburban commuters. |
| State Route 72 | 9.5 | New Britain, Plainville | Short expressway in central Connecticut | Links I-84 with surrounding areas. |
| State Route 195 | 16.7 | Willimantic, Storrs | Key access route to the University of Connecticut | Supports significant student and faculty traffic. |
| State Route 202 | 75.3 | Danbury, Torrington | Western Connecticut corridor linking rural and urban areas | Shared alignment with US 202 in some sections. |
| State Route 349 | 4.0 | Groton | Access route to Electric Boat and Submarine Base | Critical for military and industrial traffic. |
Connecticut’s transportation infrastructure is an essential component of the state’s economy and connectivity. The state features a comprehensive network of Interstate highways, U.S. highways, and State highways, facilitating the movement of people and goods within and beyond its borders. This network supports daily commuting, regional travel, and commercial transportation, connecting urban centers, suburban areas, and rural communities.
Connecticut’s Interstate highway system spans 446 miles and includes major routes that connect the state to the broader northeastern United States. The Interstate system is a critical part of the regional transportation framework.
Connecticut’s Interstates provide essential connections for interstate commerce and regional travel. They include both heavily urbanized routes and rural stretches, ensuring accessibility throughout the state.
The state’s U.S. highway system includes 7 main routes, covering 579 miles in total. These highways serve as critical connectors between smaller communities and larger cities.
U.S. highways in Connecticut provide essential connections for local and regional travel. They often run parallel to Interstates, offering alternative routes for traffic and serving smaller towns.
Connecticut has a vast network of over 100 state highways, covering both primary and secondary routes. These highways connect local communities to larger transportation corridors and provide access to rural and suburban areas.
State highways support local traffic and provide access to regional destinations, serving as critical links for areas not directly served by Interstates or U.S. highways.
