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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 Interstate 90 to Logan International Airport.
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 Turnpike) from South Boston towards its eastern terminus at Route 1A in East Boston, slightly beyond Logan International Airport.
Traffic crawls over a closed Fort Point Channel Tunnel entrance in Boston during rush hour on July 11, 2006, a day after the collapse.. The Big Dig ceiling collapse occurred on July 10, 2006, when a concrete ceiling panel and debris weighing 26 short tons (52,000 lb; 24,000 kg) and measuring 20 by 40 feet (6.1 by 12.2 m) fell in Boston's Fort Point Channel Tunnel (which connects to the Ted ...
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.
The Leonard P. Zakim (/ ˈ z eɪ k ə m /) Bunker Hill Memorial Bridge (also known as "The Zakim") is a cable-stayed bridge completed in 2003 across the Charles River in Boston, Massachusetts. It is a replacement for the Charlestown High Bridge, an older truss bridge constructed in the 1950s.
It was built 1991–1994 in the Big Dig. [1] [2] In July 2006, a ceiling tile and associated debris weighing 26 tons collapsed, causing the death of a passenger in a vehicle in the tunnel and severe injury to the driver. This incident and the resulting inspections and repairs delayed the Big Dig construction project by a year.
The Big Dig also produced the landmark Zakim Bunker Hill Bridge, and will create over 70 acres (280,000 m 2) of public parks in the heart of the city. The project as a whole has eased (but not eliminated) Boston's notorious traffic congestion; however, it is the most expensive construction project in United States history.
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 ...