Perkins County

Flint Rock Creek Bridge   [Map]
Pony truss bridge over Flint Rock Creek on Abandoned County Road
Open to traffic
Built 1916
Moreau River Bridge   [Map]
Lost through truss bridge over Moreau River on a county road, 12 mi. west and 26.3 mi. south of Bison
No longer exists
Built ca. 1940; replaced 2005
Old Zeona Road Bridge   [Map]
Steel stringer bridge over Rabbit Creek on Old Zeona Road
Intact but closed to all traffic
Built 1930 bypassed 1994
Rabbit Creek Bridge   [Map]
Pratt pony truss bridge over Rabbit Creek on Farm Road
Intact but closed to all traffic
South Fork Grand River Bridge   [Map]
Through truss bridge over South Fork Grand River on Divide Road, 13.9 mi. west and 9.4 mi. north of Bison
Replaced by a new bridge on a new alignment. Bridge removed afterwards
Built 1912 by the Canton Bridge Co.
Thunder Butte Creek Bridge   [Map]
Warren pony truss bridge over Thunder Butte Creek on Old County Road
Open to traffic
Built 1930