Originally Posted by shook

Nope, drawbridges aren't affected by building destroyers. Only dorfs can remove them (or magma, if they're not magma safe), hence making them THЩ safest doors in the game. Of course, there is the risk of crushing people (which is good), and they have a slight delay on input from levers (which is not good), but i go with bridges all day. Hell, they can do most things that doors and hatches can, and you don't need a workshop to make them.

@4zb41: Seems legit enough, some enemies take forever to down. :U