MONTREAL, July 31 (UPI) — A nearly 50-foot slab of concrete fell near one end of a highway tunnel in Montreal Sunday, forcing closure of the road’s eastbound lanes, police said.
No one was hurt in the incident on the Ville-Marie Expressway and no motorists were stuck in the tunnel, the Canadian Broadcasting Corp. reported.
It wasn’t known how long the eastbound lanes would remain blocked. The highway’s westbound lanes were partially closed, as well.
Police said the chunk that fell was designed to block light so motorists entering and exiting the tunnel are not blinded.
Construction workers told the CBC they believed vibrations created while they were working on the tunnel’s walls may have caused the slab to fall.
Transport Quebec spokeswoman Caroline Larose said the department’s engineers were inspecting the 39-year-old tunnel structure.