All true.

Most vehicles go into the water thanks to driver input. Best way to stay out of the water is to practice good defensive driving. I know of a highway patrolman who put his patrol vehicle into water thanks to driving too fast for conditions, he shot out a window while upside down under water in order to get out.

Being on a bridge that drops like a rock 60 feet or so is an adventure I hope to never experience. I would imagine that, even in the unlikely event you were uninjured, you would be very very disoriented...