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So many setbacks have plagued Boston's Big Dig during its 15-year history that a more appropriate nickname for the $14.6 billion underground highway project might be the Big Debacle.
Capping those problems, a concrete ceiling collapsed July 10 inside the new I-93 tunnel complex and killed a 38-year-old mother of three. The collapse prompted a shutdown of two of the project's tunnels for a safety inspection and a criminal investigation by state Attorney General Tom Reilly.
On Thursday, Gov. Mitt Romney overruled an earlier finding by the Massachusetts Turnpike Authority (MTA) and temporarily shut down the eastbound Ted Williams Tunnel after it was discovered that two ceiling panel bolts inside that structure had shifted by as much as an inch.
"It is perhaps an overreaction, but we want to err on the side of public safety," Mr. Romney said Thursday at a press conference.
Tests conducted in 1999 reportedly showed that bolts holding the ceiling panel in the I-90 connector tunnel, where Milena Del Valle was killed, had a tendency to come loose, and inspections of the I-93 Big Dig tunnels early last year revealed 189 defective wall panels and more than 2,000 water leaks.
"The Big Dig was billed as something far different from what it became," Mr. Romney told The Washington Times on Wednesday.
"It's been a hugely expensive and wastefully mismanaged project, and no wonder a lot of motorists keep their fingers crossed as they go through it," he said of the most expensive highway project in American history.
Troubles during the life of the project have included:
Hundreds of tunnel leaks and millions of gallons of groundwater flowing into the system because of defects in walls and waterproofing;
Weak, defective walls, which have been linked to the use of substandard concrete;




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