Johnson County

Backbone Rock   [Map · Street View]
Tunnel under Backbone Rock on TN 133 between Damascus VA and Shady Valley TN, Tennessee
Open to traffic
Cut in 1901, taken over by Park Service.
Pioneer Landing Bridge   [Map · Street View]
Steel stringer bridge over Watauga River on Nfa 1076 (Sa 4601)
Open to traffic
Built 1949