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Boston's Logan Airport lies across Boston Harbor in East Boston; and before the Big Dig, the only access to the airport from downtown was through the paired Callahan and Sumner tunnels. Traffic on the major highways from west of Boston—the Massachusetts Turnpike and Storrow Drive —mostly traveled on portions of the Central Artery to reach ...
Map showing the Williams tunnel (shown in red) The Ted Williams Tunnel (TWT) was the first major link constructed as part of Boston's Big Dig.It is constructed from twelve "binocular" shaped steel sections fabricated in a Baltimore shipyard.
The Thomas P. "Tip" O'Neill Jr. Tunnel (colloquially O'Neill Tunnel) is a highway tunnel built as part of the Big Dig in Boston, Massachusetts.It carries the Central Artery underneath downtown Boston, and is numbered as Interstate 93 (I-93), U.S. Route 1 (US 1), and Route 3.
A 1920 plan for Boston's Central Artery, based on the West Side Elevated Highway Traffic on the former Central Artery at mid-day (Demolished in 2003). A 1926 state report on rapid transit expansion recommended the conversion of the Atlantic Avenue Elevated to an elevated highway; however, it closed in 1938 and was demolished in 1942. [4]
Big Dig planners debated the mix between open space and buildings on the land to be freed up by the removal of the elevated highway. Proposals in 1985 by the state and in 1988 by the Boston Society of Architects suggested that most of the land should be used for mid-rise buildings. [42]
Diagram of the highway system in Downtown Boston before and after completion of the Big Dig. The MTA managed the Big Dig, which rerouted the elevated Central Artery into the O'Neill Tunnel through Downtown Boston, and extended the turnpike beyond its terminus at the Central Artery into the Ted Williams Tunnel and connected it to Route 1A beyond ...
The Big Dig 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 and an extension of I-90 via the Ted Williams Tunnel. [4]
Due to the reconfiguration of tunnel interchanges brought on by the completion of the Big Dig, Route 1A is discontinuous in the downtown Boston area. Vehicles entering Downtown Boston via the Sumner Tunnel must take I-93 north to the exit for Government Center and make a U-turn to access the entrance ramp to I-93 south (which silently carries ...