Below is the statement of the BNR proposal for use of the Tyler Bend trails to mountain biking. There is an open comment period until November 6th and you can comment at this site:
Tyler Bend Trails Plan / EA
The park has received multiple requests to include cycling opportunities as a new form of recreation at Buffalo National River. In response to these requests, the park is evaluating the feasibility of converting some hiking trails within the Tyler Bend area (outside of the designated wilderness) to include the use of bicycles. In addition to this planning document, a special rule would be required to allow bicycles on trails in the park; that process is proceeding alongside this planning effort.
This Environmental Assessment (EA) evaluates two alternatives for adapting hiking trails within the Tyler Bend area. This EA also assesses the impacts that could result from continuing to maintain a single-use trail system (no action alternative) or implementation of the two action alternatives. This EA has been prepared in accordance with the National Environmental Policy Act (NEPA), NPS Director’s Order 12, and 2015 NPS NEPA Handbook.