there are a few sport routes right off of the parking area, several 10ish slabs, I also recall a sport route out the left side of a roof( trashcompactor like) area that was considerably harder
I gotta go with some others who have business in the area and thought I'd check out the climbing. Whenever I travel with business, I always bring my shoes and harness. Never know what may be available.
There are at least 50 routes at Blue Heron, most in the 5.10-5.11 range. Your best bet for beta is Nat's Outdoor Store in Bowling Green. Paul Jakus might have a guide, you can email him to find out: pjakus@econ.usu.edu
GWG, try this for a downloadable guide to the Big S. Fork: http:/web.utk.edu/~pjakus/bheron.htm There's tons of great rock and climbs in the Big South Fork, but it's not right next to the road so most of the Red wiener- posers don't like it there!