Who is the lead engineer in the Big Dig?
Who is the lead engineer in the Big Dig? Swiss engineer Christian Menn took over the design of the bridge. He suggested a cradle cable-stayed bridge that would carry ten lanes of traffic. The plan was accepted and construction began on the Leonard P. Zakim Bunker Hill Memorial Bridge.
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.
What was the criticism of the Big Dig?
With interest, the project could ultimately cost around $24 billion, finally getting paid off in 2038. Besides creating a financial nightmare, the Big Dig was plagued by huge constructional flaws – which obviously added fuel to the fiscal firestorm.
What replaced the central artery in Boston?
The Boston's Big Dig project replaced the elevated deteriorating six-lane elevated Central Artery (I-93) with an underground expressway beneath the existing road, extended the I-90 tollway underground to the South Boston Seaport and Logan International Airport, built a new 10-lane bridge over the Charles River, and ...
Who went to jail for the Big Dig?
Aggregate provided 60% of the concrete used to build the Big Dig. Indicted were: former general manager Robert Prosperi; dispatch manager Marc Blais; dispatch manager John Farrar; quality control manager McNally; district operations manager Gregory Stevenson; and dispatch manager Keith Thomas.
Where did the dirt from the Big Dig go?
About two-thirds of the dirt went to landfills and other sites. Moving all that dirt took more than 541,000 truckloads. If all those trucks lined up end to end, they'd back up 4,612 miles. That's all the way to Brasilia, capital of Brazil, as the crow flies, or to the Panama Canal over land.
What went wrong with the Big Dig project?
The project was plagued due to construction delays, cost overruns, flaws in the design, poor execution, use of low-quality material, and construction accidents. As per the earlier estimation, the project should have been completed by the end of 1998 with an estimated cost of USD 2.8 billion.