Robertson County

Cheek's Tavern Bridge   [Map]
Stone arch bridge over Red River on Old US 31, (Dixie Highway/Louisville to Nashville Turnpike)
Open to pedestrians
Built ca. 1841 as part of the Louisville to Nashville Turnpike, a toll road for stage coaches.
CSX - Ridgetop Tunnel   [Map]
Tunnel under town of Ridgetop, Tennessee on CSX Railroad
Open to traffic
Built 1905 by the Nashville, Chattanooga & St. Louis RR (predecessor to the Louisville & Nashville RR, later CSX).. was longest free standing tunnel in the world when completed.
Csx Rr / Bryant Road Bridge   [Map · Street View]
Culvert bridge over Csx Rr / Bryant Road on Csx Rr 348148w
Old Cedar Grove Road Bridge   [Map]
Abandoned pratt pony truss bridge over South Fork Red River on a closed section of Old Cedar Grove Road
Abandoned
Old Harmony Church Rd Bridge   [Map]
Pratt through truss bridge over Red River on Old Harmony Church Rd (old alignment of TN 76)
Intact but closed to all traffic
Red River Railroad Bridge   [Map · Street View]
Deck truss bridge over Red River on CSX Railroad
Open to traffic
Sulfur Fork Bridge   [Map]
Pratt through truss bridge over Sulfur Fork on an old alignment of the Old Clarksville-Springfield Rd. in Port Royal State Park
Open to pedestrians
Built 1890 by the Converse Bridge Company
Sulfur Fork Station Bridge   [Map]
Pratt pony truss bridge over Sulfur Fork Creek on a private driveway
Open to traffic
Built by Champion Bridge Company
Sulphur Fork Railroad Bridge   [Map · Street View]
Deck truss bridge over Sulphur Fork on CSX Railroad
Open to traffic