110th Street Bridge Through truss bridge over East Fork Des Moines River on 110th Street Open to one-lane traffic Built 1911 by the Iowa Bridge Co.
Berkheimer Bridge Through truss bridge over West Fork Des Moines River on 215th Street west of Humboldt Open to traffic Built 1899 by the Clinton Bridge & Iron Works; closed 2001; rehabilitated 2005
Blood Run Bridge Lost through truss bridge over Blood Run Creek on Oak Avenue north of Livermore Collapsed Built 1901 by the Marshalltown Bridge & Iron Works; destroyed 2003 in car accident
Des Moines River Bridge Through truss bridge over Des Moines River on a local road Open to traffic Built ca. 1900
Des Moines River Bridge Lost through truss bridge over Des Moines River on a local road No longer exists Built 1937; replaced 2001
Gotch Park Bridge Through truss bridge over East Fork Des Moines River on the Three Rivers Bike Trail at Gotch Park near Humboldt Open to pedestrians and bicyclists only Built for the Chicago & Northwestern Railroad; converted for trail use in 1991
Lewis Street Bridge Lost two-span through truss bridge over West Fork Des Moines River on Lewis Street in Humboldt No longer exists Built 1906; demolished 1972
Livermore Bridge Lost through truss bridge over East Fork Des Moines River on 120th Street east of Livermore Replaced by a new bridge Replaced 2000
Local Road Bridge Through truss bridge over an unnamed creek on a local road Unknown status Built 1901
Murray Bridge Through truss bridge over West Fork Des Moines River on 190th Street, southeast of Bradgate Closed to traffic Built 1905 by A.H. Austin; rehabilitated 1982; damaged in car wreck during 2004
Prairie Creek Bridge Lost pony truss bridge over Prairie Creek on a local road No longer exists Replaced 2003
Prairie Creek Bridge Pony truss bridge over Prairie Creek on a local road Open to traffic Built 1900
Prairie Creek Bridge Pony truss bridge over Prairie Creek on a local road Open to traffic Built 1900
Sumner Avenue Bridge Three-span concrete arch bridge over West Fork Des Moines River on Sumner Avenue in Humboldt Open to traffic Built 1919
Unnamed Creek Bridge Arch bridge over an unnamed creek on a local road Open to traffic Built 1900
Unnamed Creek Bridge Pony truss bridge over an unnamed creek on a local road Open to traffic Built 1900