Ziebach County

Elm Creek Bridge   [Map]
Pony truss bridge over Elm Creek on an IRR county road in Dupree
Open to traffic
Built 1935
Four Corners Bridge   [Map]
Through truss bridge over Cheyenne River on an IRR County Road, 15.7 mi. west and 4.4 mi. north of Milesvill
Open to traffic
Built 1930