So, You study eastern USA routes? Here's a route for TRS2004, which requires HOG (Hand Of God) utility, and membership in Trainz, http://www.fishlips.net/Cookeville/ .
The route adds to a Tennessee Central route, Hopkinsville, KY. to Nashville, Tn.
This is a route with 2.5% grade, at Baxter Grade.
This is a route you can ride.
Tennessee Railway Museum.