SAN FRANCISCO (AP) — Authorities have reopened all lanes of a major San Francisco Bay Area bridge that was closed for hours when concrete chunks fell onto a roadway.
The California Department of Transportation says the Interstate 580 Richmond-San Rafael Bridge was shortly after 11 a.m. Thursday when concrete chunks — some larger than a baseball — fell from the westbound upper deck onto the eastbound lower deck.
At least one car was struck and heavily damaged but no injuries were reported.
The shutdown lasted hours, except for one brief partial afternoon reopening before more concrete fell. The final eastbound lanes were reopened Thursday night.
The bridge carries tens of thousands of cars daily.
While contractors have been working on the upper deck, Caltrans says it hasn’t determined what caused the concrete to fall.