Interstate 95 in Massachusetts

Interstate 95 in Massachusetts is a major north–south highway that traverses the eastern portion of the Commonwealth. It serves as a critical transportation artery, connecting the metropolitan areas of Providence and Boston before continuing north toward Portsmouth and Maine. The route passes through diverse landscapes, from suburban communities to dense urban corridors, and intersects with several other key interstate highways.

Route description

Entering from Rhode Island in Attleboro, the highway initially runs concurrently with U.S. Route 1 through the South Coast region. It passes near the Wampanoag homeland and the industrial city of Taunton before diverging northeastward. The route skirts the western suburbs of Boston, including Dedham and Waltham, where it intersects the Massachusetts Turnpike (Interstate 90) and forms a brief concurrency with Interstate 93 near the Mystic River. North of the Charles River, it passes through the woodlands of the Middlesex Fells Reservation and the suburban centers of Wakefield and Andover. The final segment crosses the Merrimack River near Lawrence and traverses the coastal plains of Essex County, including areas near the Parker River National Wildlife Refuge, before reaching the New Hampshire state line at the Merrimack River estuary in Salisbury.

History

The routing of the highway was part of the original Interstate Highway System plans authorized by the Federal-Aid Highway Act of 1956. Initial construction in the late 1950s focused on bypassing the congested U.S. Route 1 corridor south of Boston. A significant and controversial project was the routing through Cambridge and Somerville, which faced opposition from community groups like the Emergency Committee on the Transportation Crisis. The central artery through Boston was eventually assigned to Interstate 93, while this route was redirected along the Route 128 corridor, a pre-existing limited-access highway conceived by the Massachusetts Department of Public Works. The northern sections through Middlesex and Essex counties were completed throughout the 1960s and early 1970s, with the final link to New Hampshire opening in 1975.

Exit list

The exit numbering sequence begins at the Rhode Island border and increases northward. Key interchanges include Exit 1 with I-295/US 1 in Attleboro, Exit 9 for Mansfield and the Xfinity Center, and Exit 12A-B for the junction with I-495. In the Greater Boston area, major exits include Exit 20 for the Massachusetts Turnpike (I-90), Exit 25 for the complex interchange with I-93/US 1 (the Central Artery), and Exit 28 for Route 128 north. Notable northern exits include Exit 45 for Andover and Lawrence, Exit 50 for Haverhill, and Exit 58 for the junction with I-495 near the Merrimack Valley.

Auxiliary routes

Two three-digit auxiliary Interstates branch from the mainline within the state. Interstate 195 provides a critical east–west connector from Mansfield to Cape Cod, terminating in Wareham near Buzzards Bay. Interstate 295 forms a western bypass of Providence, beginning at the mainline in Attleboro and reconnecting with it just over the state line in North Attleborough. Additionally, the highway is cosigned with Route 128 for much of its arc around Boston, a designation that remains prominent in local parlance and business geography, such as the Route 128 corridor technology region.

Major intersections

The southern terminus is a continuation of I-95 from Rhode Island. Major junctions proceeding north include the multiplex with US 1 from the state line to Foxborough, the interchange with I-495 near Mansfield, and the pivotal junction with the Massachusetts Turnpike (I-90) in Westwood. The highway intersects I-93/US 1 at the Zakim Bunker Hill Bridge approach in Charlestown. Further north, it meets the western terminus of I-95's spur, Route 128, near Peabody, and has a final major interchange with I-495 in Amesbury before reaching its northern terminus at the New Hampshire state line, where it continues as I-95 toward Portsmouth. Category:Interstate 95