| Name | Location | Status | Design | Year Built | Year Lost | Span Length | Total Length |
|---|---|---|---|---|---|---|---|
| Columbia River Bridge | US 101 over Columbia River | Open to traffic | Through truss | 1966 | -- | 1232.0 ft. | 9387.6 ft. |
| Elk Prairie Road Bridge | Elk Prairie Road over Fern Creek | Open to traffic | Arch | 1916 | -- | 40.0 ft. | 54.1 ft. |
| Fork Creek Bridge | WA 6 over Fork Creek | Open to traffic | Arch | 1918 | -- | 75.1 ft. | 75.1 ft. |
| Fort Columbia Tunnel | US 101 under Rock formation | Open to traffic | Tunnel | 1932 | -- | -- | 799.9 ft. |
| Halfmoon Creek Bridge | WA 6 over Halfmoon Creek | Open to traffic | Arch | 1917 | -- | 60.0 ft. | 64.0 ft. |
| Heckard Road Bridge | Heckard Road over Slough | Open to traffic | Arch | 1916 | -- | 29.9 ft. | 40.0 ft. |
| Lebam Road Bridge | Lebam Road over Willapa River | Open to traffic | Arch | 1917 | -- | 60.0 ft. | 149.0 ft. |
| Stauffer Road Bridge | Stauffer Road over Green Creek | Open to traffic | Arch | 1917 | -- | 29.9 ft. | 42.0 ft. |
| Trap Creek Bridge | WA 6 over Trap Creek | Open to traffic | Arch | 1918 | -- | 44.0 ft. | 111.9 ft. |
| Willapa River Bridge | WA 6 over Willapa River | Open to traffic | Through truss | 1929 | -- | 162.1 ft. | 274.9 ft. |