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Pacific County
| Name | Location | Status | Design | Year Built | Year Lost | Span Length (ft.) | Total Length (ft.) |
|---|
| Astoria-Megler Bridge | US 101 over Columbia River | Open to traffic | Warren through truss | 1966 | -- | 1232.0 | 21677.0 |
| Astoria-Megler Ferry | Ferry over Columbia River | Replaced by the Astoria-Megler Bridge | Ferry | 1921 | 1966 | -- | 21120.0 |
| Bone River Bridge | US 101 over Bone River | Open to traffic | Timber stringer | 1935 | -- | 30.8 | 296.9 |
| Elk Prairie Road Bridge | Elk Prairie Road over Fern Creek | Open to traffic | Closed-spandrel arch | 1916 | -- | 40.0 | 54.1 |
| Elkhorn Creek Bridge | US 101 over Elkhorn Creek | Open to traffic | Concrete tee beam | 1929 | -- | 45.9 | 98.1 |
| Forks Creek Bridge | WA 6 over Forks Creek | Open to traffic | Closed-spandrel arch | 1918 | -- | 75.1 | 75.1 |
| Fort Columbia Tunnel | US 101 under Rock formation | Open to traffic | Tunnel | 1932 | -- | -- | 799.9 |
| Halfmoon Creek Bridge | WA 6 over Halfmoon Creek | Open to traffic | Closed-spandrel arch | 1917 | -- | 60.0 | 64.0 |
| Heckard Road Bridge | Heckard Road over Slough | Open to traffic | Closed-spandrel arch | 1916 | -- | 29.9 | 40.0 |
| Jorgenson Slough Bridge | US 101 over Jorgenson Slough | Open to traffic | Timber stringer | 1939 | -- | 17.1 | 69.9 |
| Lebam Road Bridge | Lebam Road over Willapa River | Open to traffic | Closed-spandrel arch | 1917 | -- | 60.0 | 149.0 |
| Middle Nemah River Bridge | US 101 over Middle Nemah River | Open to traffic | Timber stringer | 1939 | -- | 40.0 | 86.0 |
| North River Bridge | WA 105 over North River | Open to traffic | Timber stringer | 1959 | -- | 80.1 | 596.2 |
| Pluvius Bridge | WA 6 over Former Northern Pacific Railroad, future Willapa Hills Rail-Trail | Open to traffic | Concrete tee beam | 1922 | -- | 38.1 | 161.1 |
| Smith Creek Bridge | WA 105 over Smith Creek | Open to traffic | Timber stringer | 1959 | -- | 65.0 | 308.1 |
| Smith Creek Bridge | US 101 over Smith Creek | Open to traffic | Concrete tee beam | 1929 | -- | 45.9 | 115.2 |
| South Fork Willapa River Bridge | former Northern Pacific Railroad over South Fork Willapa River | Derelict/abandoned | Warren through truss | 1910 | -- | 330.0 | 430.0 |
| Stauffer Road Bridge | Stauffer Road over Green Creek | Open to traffic | Closed-spandrel arch | 1917 | -- | 29.9 | 42.0 |
| Tide Slough Bridge | US 101 over Tide Slough | Open to traffic | Slab | 1939 | -- | 17.1 | 138.1 |
| Trap Creek Bridge | WA 6 over Trap Creek | Open to traffic | Closed-spandrel arch | 1918 | -- | 44.0 | 111.9 |
| Willapa River Bridge | WA 6 over Willapa River | Open to traffic | Parker through truss | 1929 | -- | 162.1 | 274.9 |
| Willapa River Railroad Bridge | Abandoned Northern Pacific Railroad over Willapa River | Open to pedestrians | Warren pony truss with all verticals | 1897 | -- | 120.0 | 150.0 |
| Willapa River Railroad Bridge | Abandoned Northern Pacific Railroad over Willapa River | Open to pedestrians | Pratt through truss | 1896 | -- | 160.0 | 205.0 |