Notify the Streets Dept
Sorry to hear you got hurt; it happens at some point. Glad you are going to be OK.
You should let the Streets Dept or DOT know about the accident. As in everything in America now, the legal dept would put a fix for this at the top of the list, because they want to limit liability. The fact that the road caused a spill WILL get their attention. Maybe not a fix soon, but it will top their list when they do have to do other work on the bridge.