Could a bridge be built to float if it collapsed?
June 16, 2016 4:56 AM Subscribe
I was told in San Diego that the bridge to Coronado Island had "air pockets in the concrete" so it would break up into buoyant pieces if it collapsed and not block the navy ships in the bay. I never quite understood this and Wikipedia says it's an urban legend, but would it even be possible from an engineering perspective? Has any large bridge been built this way? Is it even a realistic problem?