Incidently, if you can find your way back in there, beside the draw bridges is an awesome place to watch the trains.
A former Buffalo friend of mine, who has since moved to Seattle of all places, used to film railfan videos (Iron Horse Video Productions) all over the Northeast. He took me back in there beside the draw bridges for a couple hours of filming, and it was a train watcher's dream. Just don't get caught where you shouldn't be (of course this was pre 9/11 and when Conrail ran the property) and stay outside of the fenced off hazardous contamination area.
More recently in 2007, at an accessible nearby location, I hiked in over a mile from the Tift St. baseball grounds. Found all sorts of "secret" winding dirt access roads, roaming deer, heavily used tracks criss crossing all over the place, right up behind the Ohio St. yards and grain silos. I believe it's the old Compromise branch connectors to Ohio St & Seneca Yards. Never went back to try and drive in, but saw at least a couple "ordinary" looking citizens driving their regular old pickup trucks back in there. Weird, like a different world back in there. Again, use common sense around the tracks, because this is an area not set up to protect the common public. Like a final frontier for the only people willing to go back in there.