Bridges have been known to take quite a beating: http://en.wikipedia.org/wiki/Thanh_H%C3%B3a_Bridge#Operation_Rolling_Thunder http://en.wikipedia.org/wiki/Thanh

Bridges have been known to take quite a beating: http://en.wikipedia.org/wiki/Thanh_H%C3%B3a_Bridge#Operation_Rolling_Thunder http://en.wikipedia.org/wiki/Thanh_H%C3%B3a_Bridge#Operation... That's a bit of an exceptional case, but still, it isn't trivial.