What is the Big Dig controversy?

What is the Big Dig controversy? The Big Dig was the most expensive highway project in the United States, and was plagued by cost overruns, delays, leaks, design flaws, charges of poor execution and use of substandard materials, criminal charges and arrests, and the death of one motorist.

Does the blue line go underwater?

Perhaps ironically, the Blue Line takes several points of pride from its proximity to water, which gives it its name. Local historians claim the tunnel that runs under the harbor as the first underwater subway tunnel in the United States.

How do they build tunnels underwater?

To use this method, builders dig a trench in the riverbed or ocean floor. They then sink pre-made steel or concrete tubes in the trench. After the tubes are covered with a thick layer of rock, workers connect the sections of tubes and pump out any remaining water.

Is Callahan Tunnel underwater?

It was originally a two-way road that carried traffic in both directions, until the opening of the parallel Callahan Tunnel in 1961. The tunnel is 8,448 feet long, of which approximately 3,960 feet are underwater. In 2017, the state removed the tollbooths as part of a switch to electronic tolling.

How many tunnels are in Boston?

The four tunnels vary in age between 19 years old and 88 years old. Both the Ted Williams Tunnel, which opened in 1995, and the Thomas O'Neill Tunnel, which opened in 2003, were part of the historic Big Dig project.

Is the Sumner and Callahan Tunnel the same?

The Sumner Tunnel was opened on June 30, 1934. It carried traffic in both directions until the opening of the parallel Callahan Tunnel in 1961. The Sumner Tunnel is named for William H. Sumner, the son of Governor Increase Sumner.

Why was the Big Dig a failure?

For the Big Dig the failure to uphold project standards resulted in leaks, a collapsed concrete panel that caused a death, falling light fixtures due to cracked and ruined nuts, and treacherous guardrails – among other problems.

When did the Big Dig break ground?

Planning began in 1982; the construction work was carried out 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.

Who funded the Big Dig?

But few had a bigger stake in the project than four high-stakes players: •Bechtel/Parsons Brinckerhoff (B/PB) the joint venture hired by the Commonwealth in 1985 to manage Big Dig design and construction; •Federal Highway Administration (FHWA—in the U.S. Department of Transportation), the federal funding agency for the ...

What is the most famous underwater tunnel in the world?

In terms of underwater tunnels in general, though, the top honor goes to the Channel Tunnel, which connects England and France by rail. Its submerged portion runs for 37.9 kilometers, the longest of any underwater tunnel in the world.