Union County

320th Street Bridge   [Map]
Pony truss bridge over an unnamed creek on 320th Street, 4 mi. north and 0.7 mi. east of Elk Point
Made obsolete by a new bridge. Old bridge is still standing.
Built 1935
Big Sioux River Bridge   [Map]
Lost Camelback through truss bridge over Big Sioux River on Road
Replaced by a new bridge
BNSF - Big Sioux River Bridge   [Map · Street View]
Through truss bridge over Big Sioux River on Railroad
Open to traffic
Brule Creek Bridge   [Map]
Lost pony truss bridge over Brule Creek on 476th Avenue
No longer exists
Built ca. 1940; replaced 2004
Brule Creek Bridge   [Map]
Pony truss bridge over Brule Creek on 316th Street, 8 mi. north and 0.1 mi. east of Elk Point
Replaced by a new bridge
Built 1938
DAIR - Big Sioux Crossing (Oak Grove)   [Map]
Pratt through truss bridge over Big Sioux River on DAIR
Open to traffic
DAIR - Big Sioux River Bridge   [Map]
Pratt through truss bridge over Big Sioux River on Railraod (DAIR)
Open to traffic
DAIR - Big Sioux River Bridge (Midway Betwixt Hudson & Fairview)   [Map]
Pony truss bridge over Big Sioux River on Railraod (DAIR)
Open to traffic
UP - Big Sioux River Bridge   [Map · Street View]
Three-span through truss bridge over Big Sioux River on the UPRR at Hawarden
Open to railroad traffic