I pulled over a huge curb/median in mine about a year and a half ago, sounded awful but no ill effects that I've noticed.
It was pulling out of a parking lot, went to make a left (on a dark night and there was no "one way only" sign on the median like there normally is...it was the worst sound ever. The curb was low enough that I didn't hit it with the front bumper, but high enough that I bottomed out as I jumped over it.
My guess after that is that as long as the bumper will clear whatever you're going over and you don't hit it at a million miles an hour, you should be fine. The bottom of the car is built like a tank.