Crews in Boston are removing in sections a monolithic, 43,000-sq-ft, 4-in.-thick reinforced-concrete ceiling off an Interstate 90 tunnel using specialized trucks equipped with shipping containers and ...

Concrete ceiling slabs fell onto moving vehicles inside a Japanese highway tunnel The nine dead were traveling in three vehicles in the tunnel Search was suspended while work is done to support ...

A massive chunk of concrete ceiling in a Tampa International Airport parking garage collapsed early Monday, crushing an empty rental car and damaging two others. The 50-foot-by-150-foot slab came ...