In 2013, a tanker ship hit the Bay Bridge (Oakland <--> SF) but didn't do much damage. In 2007, another tanker (Cosco Busan) hit the same bridge dumping oil into the bay: https://www.youtube.com/watch?v=upfjxfl2nRM. We have a new bridge there now because that one was also damaged in the Loma Prieta earthquake.

When the Golden Gate needs replacement, the Marin NIMBY's that didn't extend BART to the north bay are going to be sad (more likely, their children will be).