Niobrara County

Cheyenne River Bridge   [Map]
Through truss bridge over Cheyenne River on CN14-9
Open to traffic
Built ca. 1915
Lance Creek Bridge
Wooden bridge over Lance Creek on WY 271
Open to traffic
Built 1940
Oil Creek Bridge
Wooden bridge over Oil Creek on WY 271
Open to traffic
Built 1940
Old Hwy 85 Old Woman Creek Bridge   [Map]
Warren pony truss bridge over Old Woman Creek on Old Hwy 85 (Redbird Rd)
Open to traffic
Old US 85 Bridge   [Map · Street View]
Timber stringer bridge over an unnamed creek on an abandoned alignment of US 85
Seems to be used as part of a farm or ranch road
Old US 85 Old Woman Creek Bridge   [Map · Street View]
Abandoned steel stringer bridge over Old Woman Creek on an abandoned alignment of US 85
Being in the desert, the bridge is in excellent shape
According to NBI bridge abandoned in 1971 when new bridge was built.