The Contra Costa Times says about 21 percent -- or 380 Bay Area bridges and overpasses -- have serious structural problems.
The report released Wednesday by Transportation for America, a coalition fighting federal transportation spending, says the Bay Area has one of the nation's highest number of metropolitan area bridge structural deficiencies.
A deficiency doesn't mean a bridge is in imminent danger of failing.
But the coalition says it work or increased inspections are needed.
The analysis is based on a federal inventory database rating bridge pavement, structures and foundations in 2009, the most recent figures available.