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Columbia County
| Name | Location | Status | Design | Year Built | Year Lost | Span Length (ft.) | Total Length (ft.) |
| First Street Bridge | First Street over Patit Creek | Removed and replaced | Deck arch | 1915 | 2005 | 41.0 | 53.2 |
| Front Street Bridge | Front Street over Patit Creek | Open to traffic | Closed-spandrel arch | 1915 | -- | 42.0 | 53.2 |
| Lower Hogeye Road Bridge | Lower Hogeye Road over Whiskey Creek | Open to traffic | Deck arch | 1916 | -- | 42.0 | 56.1 |
| Lyons Ferry Bridge | WA 261 over Snake River | Open to traffic | Parker through truss | 1927 | -- | 520.0 | 2040.1 |
| PCC Railroad Bridge near Huntsville | PCC (Palouse River and Coulee City Railroad) over Touchet River (?) | | Pratt through truss | -- | -- | -- | -- |
| Third Street Bridge | Third Street over Patit Creek | Open to traffic | Deck arch | 1915 | -- | 40.0 | 44.0 |
| U.P.R.R. - Snake River Bridge | Union Pacific Railroad over Snake River | Open to traffic | Polygonal Warren through truss with all verticals | 1961 | -- | 410.0 | 1220.0 |