Fort Knox, Kentucky

Bridges to the Past (Bridge #1) (Hardin County, Kentucky)
L&N Turnpike chartered by KY government in 1829. Construction of L&N Turnpike began in 1837 including bridges and completed in 1849. Placed on National Register of Historic Places in 1996.
Stone arch bridge over East Fork Tioga Creek on the "Bridges to the Past" walking trail, a restored section of the old L&N Turnpike (Old Dixie Hwy/US 31) in Fort Knox
Open to pedestrians

Bridges to the Past (Bridge #2) (Hardin County, Kentucky)
Built ca. 1837. Placed on National Register of Historic Places in 1996. For more info see Bridges to the Past (Bridge #1)
Stone arch bridge over East Fork Tioga Creek on the "Bridges to the Past" walking trail, a restored section of the old L&N Turnpike (Old Dixie Hwy/US 31) in Fort Knox
Open to pedestrians

Bridges to the Past (Bridge #3) (Hardin County, Kentucky)
Built ca. 1837. Placed on the National Register of Historic Places in 1996. For more info. see Bridges to the Past (Bridge #1).
Stone arch bridge over East Fork Tioga Creek on the "Bridges to the Past" walking trail, a restored section of the old L&N Turnpike (Old Dixie Hwy/US 31) in Fort Knox
Open to pedestrians

Old Railway Trestle Road Bridge (Hardin County, Kentucky)
Built 1919
Concrete stringer bridge over a railroad on a closed section of Railway Trestle Road (formely US 31).
Closed to all traffic

Wooldridge Ferry Bridge (Bullitt County, Kentucky)
Abandoned Parker/Pratt through truss bridge over Rolling Fork on a closed section of Belmont Road that is located inside Fort Knox Army Base
Derelict/abandoned and located inside Fort Knox