State replacing faulty nuts in Big Dig tunnel system

BOSTON — Highway officials have found a widespread problem of cracked construction nuts within the Big Dig tunnel system, leading workers to inspect more than 100,000 nuts, Highway Administrator Tom Tinlin disclosed Wednesday. Hundreds of deficient nuts have been identified through the system, though officials said there are no safety concerns.

BOSTON — Highway officials have found a widespread problem of cracked construction nuts within the Big Dig tunnel system, leading workers to inspect more than 100,000 nuts, Highway Administrator Tom Tinlin disclosed Wednesday. Hundreds of deficient nuts have been identified through the system, though officials said there are no safety concerns.…