Here's the googlemaps view of the derelict hospital's road network, on the A89 between Bathgate and Broxburn.

Some rough, some smooth, some steep, some mellow but a great place to kill an hour or two.
Site is built on a hill - top of map being top of hill. The road running SE at the bottom left is a very fast one to bomb (not part of the hospital though) and has a couple of nice corners at the top.