I was watching a program on TV yesterday, about a 1993 railway accident on a bridge over Big Bayou Canot near Mobile, Alabama.
Basically, a barge hit and distorted the middle span of the bridge. A few moments later the Sunset Limited express hit the distorted span, which resulted in part of the bridge (and part of the train) crashing into the river. 47 people died.
However, the bridge was repaired in a few weeks.
I didn't understand part of the program, so I thought a look at a map might help with the explanation. Here's what I found: