| Date | St | County | City | Building |
|---|
| IA | Clinton | Delmar | Main Street Overpass |
| Chicago, Milwaukee and St Paul Pacific Railroad |
| IA | Boone | Madrid | High Trestle Trail - Prairie Creek Culvert |
| Chicago, Milwaukee and St Paul Pacific Railroad |
| 1881 | IA | Dallas | | Granger High Bridge |
| Chicago, Milwaukee and St Paul Pacific Railroad |
| Des Moines Northern and Western Railway |
| 1885 | MN | Hennepin | Minneapolis | Bohemian Flats Bridge |
| Northern Pacific Railroad |
| Edge Moor Bridge Works |
| 1893 | OR | Clackamas | | Portland Water Works Bridge |
| 1894 | MN | Washington | | Rock Island Bridge |
| Chicago, Rock Island and Pacific Railway |
| 1896 | IA | Dubuque | | Red Bridge |
| Canadian Pacific Railway |
| Chicago, Milwaukee and St Paul Pacific Railroad |
| 1898 | IA | Scott | Rock Island | Crescent Bridge |
| Chicago, Burlington and Quincy Railroad |
| Davenport, Rock Island and Northwestern Railway |
| 1900 | MT | Dawson | | Bell Street Bridge |
| 1901 | MN | Hennepin | Minneapolis | Boom Island Pedestrian Bridge |
| Chicago and Northwestern Railway |
| Chicago Great Western Railroad |
| 1902 | MN | Hennepin | Minneapolis | Short Line Bridge |
| Canadian Pacific Railway |
| Chicago, Milwaukee and St Paul Pacific Railroad |
| 1902 | WI | Marinette | | Kingsford Bridge |
| Chicago, Milwaukee and St Paul Pacific Railroad |
| Escanaba and Lake Superior Railroad |
| 1906 | IA | Jackson | Sabula | Sabula Bridge |
| Chicago, Milwaukee and St Paul Pacific Railroad |
| Canadian Pacific Railway |
| 1912 | IA | Story | | Heart of Iowa Trail - Mousehole |
| Chicago, Milwaukee and St Paul Pacific Railroad |
| 1912 | IA | Story | | Wolf Creek Bridge |
| Chicago, Milwaukee and St Paul Pacific Railroad |
| 1912 | IA | Marshall | | Heart of Iowa Trail - Hoy Bridge |
| Chicago, Milwaukee and St Paul Pacific Railroad |
| 1912 | IA | Story | Cambridge | Water Street Overpass |
| Chicago, Milwaukee and St Paul Pacific Railroad |
| 1912 | IA | Story | Cambridge | Skunk River Bridge |
| Chicago, Milwaukee and St Paul Pacific Railroad |
| 1912 | IA | Story | Maxwell | Indian Creek Bridge |
| Chicago, Milwaukee and St Paul Pacific Railroad |
| 1912 | IA | Story | Maxwell | Heart of Iowa Trail - Rock Creek Arch Bridge |
| Chicago, Milwaukee and St Paul Pacific Railroad |
| 1913 | IA | Carroll | | Manning Viaduct |
| Chicago Great Western Railroad |
| Chicago, Milwaukee and St Paul Pacific Railroad |
| 1913 | IA | Carroll | | Brushy Creek Bridge |
| Chicago, Milwaukee and St Paul Pacific Railroad |
| 1913 | IA | Carroll | Coon Rapids | Middle Raccoon River Bridge |
| Chicago, Milwaukee and St Paul Pacific Railroad |
| 1913 | IA | Boone | Madrid | High Trestle Trail - Murphy Branch Culvert |
| Chicago, Milwaukee and St Paul Pacific Railroad |
| 1913 | IA | Carroll | Manning | May Street Overpass |
| Chicago, Milwaukee and St Paul Pacific Railroad |
| 1914 | IA | Boone | Madrid | State Street Overpass |
| Chicago and Northwestern Railway |
| Chicago, Milwaukee and St Paul Pacific Railroad |
| 1915 | IA | Keokuk | | Richland Creek Arch |
| Chicago, Milwaukee and St Paul Pacific Railroad |
| 1915 | MN | Ramsey | St Paul | Omaha Bridge #15 |
| Chicago and Northwestern Railway |
| Chicago, St Paul, Minneapolis and Omaha Railway |
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