The Most Expensive Highway Project in The US Engineering - Full Documentary HD

The Central Tunnel Project, known unofficially as the Big Dig, was a #megaproject in #Boston that rerouted the Central Artery, as the chief highway through the heart of the city, into the 3.5-mile Thomas P. O'Neill Jr. Tunnel. The project also included the #construction of the Ted Williams Tunnel (extending Interstate 90 to Logan International Airport), the Leonard P. Zakim Bunker Hill Memorial Bridge over the Charles River, and the Rose Kennedy Greenway in the space vacated by the previous I-93 elevated roadway. Initially, the plan was also to include a rail connection between Boston's two major train terminals. The official planning phase started in 1982; the construction work was done between 1991 and 2006; and the project concluded on December 31, 2007, when the partnership between the program manager and the Massachusetts Turnpike Authority ended. Share the video: https://youtu.be/U4N0ZmZawic