The Interstate Highways in Massachusetts comprise five current primary
Interstate Highways
The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly known as the Interstate Highway System, or the Eisenhower Interstate System, is a network of controlled-access highways that forms part of the National H ...
and eight auxiliary Interstates. In addition, two auxiliary Interstates were proposed and then cancelled.
The longest Interstate Highway in Massachusetts is I-90 with 136 miles, followed by I-495 with 121 miles.
Several freeway projects in the
Boston
Boston is the capital and most populous city in the Commonwealth (U.S. state), Commonwealth of Massachusetts in the United States. The city serves as the cultural and Financial centre, financial center of New England, a region of the Northeas ...
area planned as part of the Interstate Highway System were cancelled in the 1970s following
community opposition, including the
Inner Belt (I-695) and
Southwest Expressway (I-95). The
Big Dig
The Big Dig was a megaproject in Boston that rerouted the then elevated Central Artery of Interstate 93 that cut across Boston into the O'Neill Tunnel and built the Ted Williams Tunnel to extend Massachusetts Turnpike, Interstate 90 to Logan I ...
megaproject in the 1990s and 2000s, which realigned several highways in Downtown Boston, included a new tunnel for I-93 to replace the
Central Artery
The Central Artery (officially the John F. Fitzgerald Expressway) is the concurrent section of Interstate 93, US 1 and Route 3 through Downtown Boston, Massachusetts, United States. The modern-day Artery, built as part of the Big Dig from ...
and an extension of I-90 via the
Ted Williams Tunnel
The Ted Williams Tunnel is a highway tunnel in Boston, Massachusetts. The third in the city to travel under Boston Harbor, with the Sumner Tunnel and the Callahan Tunnel, it carries the final segment of Interstate 90 (the Massachusetts Turnpi ...
.
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Primary Interstate Highways
Auxiliary Interstate Highways
See also
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References
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Interstate
The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly known as the Interstate Highway System, or the Eisenhower Interstate System, is a network of controlled-access highways that forms part of the National H ...