^Not Really. A service road is not and obstacle.
There is a service road between American Eagle and the rest of the park. And there was a service road between Shockwave and the park too, although it is still there... it' just dead-end's behind Condor now. The only other thing that's really in the way is the boneyard, which can be cleaned out. All it is really, is a junkyard. With the exception of Fright Fest, Six Flags never uses the Sky Whirl cages, and Power Dive sure isn't doing any good back there.