OAKLAND, Calif. (AP) - A heavily traveled section of freeway that funnels traffic off the San Francisco-Oakland Bay Bridge collapsed early Sunday after a gasoline tanker truck overturned and erupted into flames, authorities said. Flames shot 200 feet in the air and the heat was intense enough to melt part of the freeway and cause the collapse, but the truck's driver walked away from the scene with second-degree burns. No other injuries were reported.