Big Whiskey Creek Bridge Lost pony truss bridge over Big Whiskey Creek on a local road No longer exists Built ca. 1930; replaced 2004
Big Wright Creek Bridge Pony truss bridge over Big Wright Creek on a local road Open to traffic Built 1935
Drainage Ditch Garretson Bridge Pony truss bridge over Drainage Ditch Garretson on a local road Open to traffic Built ca. 1980; rehabilitated 1994
Farmers Ditch Bridge Pony truss bridge over Farmers Ditch on a local road Closed to all traffic Built ca. 1930
Farmers Ditch Bridge Pony truss bridge over Farmers Ditch on a local road Open to traffic Rehabilitated 1985
Grand Avenue Viaduct Steel stringer bridge over Over UPRR, Streets on IA 12/US Business 20 in Sioux City Open to traffic Built 1936; rehabilitated 1967
Little Sioux River Bridge Through truss bridge over Little Sioux River on a local road Open to traffic Built 1915; rehabilitated 1998
Miller Creek Bridge Pony truss bridge over Miller Creek on a local road Open to traffic Built ca. 1930
Missouri River US 77 Bridge Steel through arch bridge over Missouri River on US 77 in Sioux City Open to traffic Built 1981; rehabilitated 1983
Pacific Short Line Bridge Lost Through truss bridge over Missouri River on Old US 20 in Sioux City Replaced by new bridge Built 1890-96; North Approach replaced 1907; Nebraska swing span electrified 1919; South approach replaced 1922; North Approach rebuilt 1929; Rails removed 1937; Iowa swing span removed 1957; Cantilevered roadways widened 1961-62; Replaced 1980
Pierson Creek Bridge Pony truss bridge over Pierson Creek on a local road Open to traffic Built 1915
Reynolds Creek Bridge Pony truss bridge over Reynolds Creek on a local road Open to traffic Built 1935
West Fork Bridge Pony truss bridge over West Fork on a local road Open to traffic Built ca. 1930
West Fork Little Sioux Bridge Pony truss bridge over West Fork Little Sioux on a local road Open to traffic Built ca. 1920