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O'Brien County
Burned Bridge [Map] Lost Through truss bridge over Little Sioux River on Yellow AvenueCollapsed under the weight of a snowplow, remaining parts later burned (Based on the IA DNR naming the canoe access "Burned Bridge Access")Collapsed under the weight of a snowplow 1967
CNW - Mill Creek Bridge [Map] Lost Bridge over Mills Creek on Chicago & North Western RailroadRemoved but not replaced; abutments and supports remain
CNW/IC Overpass [Map] Lost Through truss bridge over Illinois Central Railroad on Chicago & North Western RailwayRemoved
Cole Creek Bridge [Map] Lost concrete arch bridge over Cole Creek on a local roadReplaced by new bridgeBuilt 1929; replaced 1998
Dog Creek Bridge [Map] Pony truss bridge over Dog Creek on a field entranceOpen to trafficBuilt 1900
Dry Run Bridge [Map] Pony truss bridge over Dry Run on Redwood AvenueOpen to trafficRehabilitated 1951
Dry Run Bridge [Map] Pony truss bridge over Dry Run on Polk AvenueOpen to trafficBuilt 1925
Floyd River Bridge [Map] Pony truss bridge over Floyd River on Nettle Avenue (Nettle Ave)Open to trafficRehabilitated 1954
Ginger Creek Bridge [Map] Pony truss bridge over Ginger Creek on 450th StreetOpen to trafficRehabilitated 1955
Little Floyd River Bridge [Map] Pony truss bridge over Little Floyd River on Nest Avenue (Nest Ave)Replaced by a new bridgeBuilt 1918, Replaced 2012
Mill Creek Bridge [Map] Through truss bridge over Mill Creek on Polk AvenueOpen to trafficBuilt 1924
Mill Creek Bridge [Map] Pony truss bridge over Mill Creek on Polk AvenueOpen to trafficBuilt 1918; rehabilitated 1938
Redwing Avenue Bridge [Map] Pony truss bridge over South Branch Little Floyd River on Redwing AvenueReplaced by a new culvertRehabilitated 1949
Sweeney Creek Bridge [Map] Pony truss bridge over Sweeney Creek on CR B20 (330th Street)Replaced by a new bridgeRehabilitated 1952, Replaced 2013
Waterman Creek Bridge [Map] Pony truss bridge over Waterman Creek on 420th StreetOpen to trafficBuilt ca. 1920; rehabilitated 1937
Willow Creek Bridge [Map] Pony truss bridge over Willow Creek on 480th StreetOpen to trafficBuilt 1914; rehabilitated 1954