I'm not sure if anyone else has found this glitch.
These are the steps to take to teleport either out of map or in a rock ( not the popular kill creek rock glitch )
1. From either alpha or bravo side go to down to the area which the bridge starts.
2. Walk up onto the first X that noobs usually go on to get to the middle of the bridge
3. crouch on the part that looks like a X. You will teleport inside a rock out of map or back to the start of the bridge. This works on all the Xs on the bridge, however the spots you teleport to will change.
BTW. dont start biching around like " OMG NOOB THIS IS MY GLITCH I FOUND IT FIRST" I found this glitch my self.