Union County

NameLocationStatusDesignYear BuiltYear LostSpan Length (ft.)Total Length (ft.)
317th Street Bridge317th St over Brule CreekIntact but closed to all trafficPratt through truss1910--85.085.0
320th Street Bridge320th Street over Unnamed creekMade obsolete by a new bridge. Old bridge is still standing.Pony truss1935--68.984.6
Akron BridgeRoad over Big Sioux RiverReplaced by a new bridgeCamelback through truss1900------
BNSF - Big Sioux River BridgeBNSF Railway over Big Sioux RiverOpen to trafficPratt through truss1900--150.0425.0
BNSF - SD-105 (N)BNSF Railway over SD-105Open to trafficSteel stringer1955--35.0100.0
BNSF - SD-105 (S)BNSF Railway over SD-105Open to trafficSteel stringer1955--35.0100.0
Brule Creek Bridge476th Avenue over Brule CreekNo longer existsPony trussca. 1940200459.159.4
Brule Creek Bridge316th Street over Brule CreekReplaced by a new bridgePony truss1938--69.972.8
Calliope BridgeJohnson Street over Big Sioux RiverRemoved; A lally column remainsPratt through truss--1969----
DAIR - Big Sioux Crossing (Hawarden)Dakota & Iowa Railroad over Big Sioux RiverOpen to trafficPratt through truss1894--135.0585.0
DAIR - Big Sioux River BridgeDakota & Iowa Railroad over Big Sioux RiverOpen to trafficPratt through truss1900--152.0394.0
DAIR - Big Sioux River BridgeDakota & Iowa Railroad over Big Sioux RiverOpen to railroad trafficQuadrangular lattice through truss1904--150.01097.0
Military Road Bridge (Old)Military Road over Big Sioux RiverReplaced by a new bridgeConcrete deck girder19231976----
Military Road Bridge (Older)Road over Big Sioux RiverReplaced by a new bridgePratt through truss18821923----
Old Jefferson Bridge483rd Avenue over Big Sioux RiverCollapsedThrough truss19152006154.0370.0