Spalling is when the concrete breaks apart. RELATED: Six Bay Area bridges — including the Golden Gate Bridge — could be at risk of collapsing if struck by vessel, federal officials warn ...

Spalling is when the concrete breaks apart. Caltrans closed the No. 2 lane on the westbound upper deck and the No. 2 and No. 3 lanes on the eastbound lower deck. The No. 1 lane in each direction ...

Caltrans said maintenance crews on Monday morning discovered “unsound, spalling concrete” of the eastbound upper deck near pier No. 25, which is closer to the Marin County side of the span ...