Oklahoma State Highway Department

Cimarron River Bridge (Major County, Oklahoma)
Built 1956
Steel stringer bridge over Cimarron River on US 60, US 412, and OK 8
Open to traffic

Squirrel Creek Bridge (Pottawatomie County, Oklahoma)
Built 1917
Rainbow Arch bridge over Squirrel Creek on Rangeline Rd. (N3410) in Shawnee
Open to pedestrians only