Well I was going to link a screenshot but the admin has the server down at the moment, we use the rolling garage doors as *break* between our bridges between bases, main base ---> --- <--- kill base.
You have to set it up as vertical if I recall, but then when you "open" it, it becomes a bridge to the next section. I would not recommend riding or driving across it, but running is fine. We also will set up 2 of these breaks, one on each side to compensate for jumping z's with the exception of spiders who can jump where they darn well please.