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Union County

317th Street Bridge [Map]
Pratt through truss bridge over Brule Creek on 317th St
Intact but closed to all traffic
Built 1910

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

Akron Bridge [Map]
Lost Camelback through truss bridge over Big Sioux River on Road
Replaced by a new bridge
Built 1900

BNSF - Big Sioux River Bridge [Map · Street View]
Through truss bridge over Big Sioux River on BNSF Railway
Open to traffic
Built 1900; Relocated Here 1907; Approaches Added 1930

BNSF - SD-105 (N) [Map]
Steel stringer bridge over SD-105 on BNSF Railway
Open to traffic
Built 1955

BNSF - SD-105 (S) [Map]
Steel stringer bridge over SD-105 on BNSF Railway
Open to traffic
Built 1955

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

Calliope Bridge [Map]
Lost Pratt through truss bridge over Big Sioux River on Johnson Street
Removed; A lally column remains
Built ?; Repaired/Lally column built 1895; 100' Pratt added 1907; Removed ca. 1969

DAIR - Big Sioux Crossing (Hawarden) [Map]
Pratt through truss bridge over Big Sioux River on Dakota & Iowa Railroad
Open to traffic
Built Ca. 1894

DAIR - Big Sioux River Bridge [Map]
Pratt through truss bridge over Big Sioux River on Dakota & Iowa Railroad
Open to traffic
Built 1900, Moved Here 1907

DAIR - Big Sioux River Bridge [Map · Street View]
Three-span through truss bridge over Big Sioux River on the Dakota & Iowa Railroad at Hawarden
Open to railroad traffic
Built 1904, Girders Added 1913

Military Road Bridge (Old) [Map]
Lost Bridge over Big Sioux River on Military Road
Replaced by a new bridge
Built 1923; Replaced 1976

Military Road Bridge (Older) [Map]
Lost Pratt through truss bridge over Big Sioux River on Road
Replaced by a new bridge
Built 1882; Camelback built by South Dakota to replace pile trestle later; Replaced 1923

Old Jefferson Bridge [Map]
Lost Parker through truss bridge over Big Sioux River on 483rd Avenue
Collapsed
Built 1915; Road Vacated 1967; Collapsed 2006