Map Accuracy for Walking Trails

I'm new to Sal's and the singletrack map is great - haven't gotten lost yet.

I'm curious about this map found on the lower parking lot on Cardinal Dr. Is it still accurate? Are those walking trails still maintained and accessible? I'd like to come back and walk them if so. The map has be a bit confused as it appears to have Cardinal Dr. labeled as River Road.

http://cdn2-b.examiner.com/sites/default/files/styles/image_content_widt...