I was playing on experimental server today and went to prison island. Building seems fine, although, there was no bridge for me. I mean, no texture for it, only an object. I was able to cross it "mid-air". Nothing happened to me, i haven't died and my body was without a scratch.

Edit: Forgot to include game version, which is 0.60.133345
Also, my resolution might be problem. 16:10, 1680 x 1050