The Big Dig

History, mechanics, and statistics for the Central Artery project

Recognized as the largest, most complex, and most technologically challenging highway project in the history of the United States, the Central Artery/Tunnel Project significantly reduced traffic congestion and improved mobility in one of America's oldest and most congested major cities. In addition, it helped improve the environment, and established the groundwork for continued economic growth for Massachusetts and all of New England.


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