Tennessee Code Title 11. Natural Areas and Recreation § 11-11-111

The department shall review all formal declarations of railroad right-of-way abandonments by the interstate commerce commission, for possible inclusion into the state trails system. The commissioner shall, within three (3) years after the route of a trail or trail segment included in the system has been located, determine the boundaries of the right-of-way to be associated with that trail. Such boundaries shall be established in such a manner that they protect the scenic value of the trail.