What about the refineries and bridges?
I don't think the refineries and bridges will be impacted much at all from a surge. There will be enough advance warning to get traffic off bridges that will see a surge. The bridges are strong enough to take a small surge. There is a lot of debris on the Oroville Lake, logs and branches etc., and it is kept away from the dam rim by rope barriers and such. Only if the barriers holding back the debris were to fail and the debris escaped the lake, would there be concern downstream. Not likely to happen. By the time a surge reached the Bay, it will have reduced in size from the initial 30 feet to only a few feet, if at all. Remember, much of the water would end up breaking levees and flood low-lying neighborhoods around Sacramento, well away from the Bay.