| Name | Location | Status | Design | Year Built | Year Lost | Span Length | Total Length |
|---|---|---|---|---|---|---|---|
| Big Flat Road Bridge | Big Flat Road over Hurdygurdy Creek | Open to traffic | Deck truss | 1948 | -- | 81.0 ft. | 127.0 ft. |
| George E. Tryon Bridge | South Fork Road over South Fork Smith River | Open to traffic | Steel arch | 1948 | -- | 140.1 ft. | 206.0 ft. |
| Hiouchi Bridge | US 199 over Smith River | Replaced by new bridge | Cantilevered through truss | 1929 | 1989 | -- | 615 ft. |
| Middle Fork Smith River Bridge | US 199 over Middle Fork Smith River | Open to traffic | Arch | 1925 | -- | 83.0 ft. | 149.0 ft. |
| Myrtle Creek Bridge | US 199 over Myrtle Creek | Open to traffic | Arch | 1984 | -- | 126.0 ft. | 250.0 ft. |
| Oregon Mountain Tunnel | US 199 under Oregon Mountain | Open to traffic | Tunnel | 1963 | -- | -- | 1886.2 ft. |
| Salt Creek Road Bridge | Salt Creek Road over Salt Creek | Open to traffic | Pony truss | 1975 | -- | 49.9 ft. | 52.2 ft. |
| South Fork Road Bridge | South Fork Road over Rock Creek | Open to traffic | Deck truss | 1952 | -- | 80.1 ft. | 102.0 ft. |