One of two things happened. Aliens crashed their invisible ship into it, or... God sat on it and broke it.
I can tell you all for a fact, it needed to be replaced. 2 years ago they ran a news story about how Minnesota had a bunch of shitty bridges that needed to be replaced, and that one was one of the big ones.
The Commander guy is on the tube now. Real sorry 'bout that sitcheation out there in Minnniappolish. Federal government gonna help with rescue and, getting folks out there, well, uhhhhhhhhh....somethin somethin. But let me say that Congress needs to act on my war fundin bill. Them Democrats won fair and skware, somethin somethin... running up the deafcit...'merican people need, blah blah... balance the budget in five yearsh...