| Name | Location | Status | Design | Year Built | Year Lost | Span Length | Total Length |
|---|---|---|---|---|---|---|---|
| Airport Way Bridge | Airport Way over Snohomish River | Open to traffic | Through truss | 1983 | -- | 160.1 ft. | 358.9 ft. |
| Branch Quilceda Creek Bridge | 143rd Place NE over Branch of Quilceda Creek | Open to traffic | Arch | 1997 | -- | 24.0 ft. | 25.9 ft. |
| Catherine Drive Bridge | Catherine Drive over Catherine Creek | Open to traffic | Arch | 1998 | -- | 40.0 ft. | 49.9 ft. |
| Jordan Road Bridge | Jordan Road over Jim Creek | Open to traffic | Arch | 1914 | -- | 85.0 ft. | 85.0 ft. |
| Mann Road Bridge | Mann Road over Haystack Creek | Open to traffic | Arch | 1991 | -- | 24.0 ft. | 25.9 ft. |
| Mountain Loop Highway Bridge | Mountain Loop Highway over South Fork Stillaguamish River | Open to traffic | Deck truss | 1934 | -- | 160.1 ft. | 339.9 ft. |
| Mountain Loop Highway Bridge | Mountain Loop Highway over South Fork Stillaguamish River | Open to traffic | Through truss | 1954 | -- | 163.1 ft. | 211.0 ft. |
| Mountain Loop Highway Bridge | Mountain Loop Highway over South Fork Stillaguamish River | Open to traffic | Through truss | 1954 | -- | 163.1 ft. | 209.0 ft. |
| Mukilteo Blvd. Bridge | Mukilteo Blvd. over Merrill & Ring Creek | Open to traffic | Deck truss | 1931 | -- | 182.1 ft. | 383.9 ft. |
| North Fork Skykomish River Bridge | 5th Street over North Fork Skykomish River | Open to traffic | Steel through arch | 1999 | -- | 262.2 ft. | 271.0 ft. |
| North Fork Stillaguamish River Bridge | WA 530 over North Fork Stillaguamish River | Open to traffic | Steel through arch | 1966 | -- | 278.9 ft. | 377.0 ft. |
| O.K. Mill Road Bridge | O.K. Mill Road over Pilchuck River | Open to traffic | Truss | 1931 | -- | -- | 339.9 ft. |
| Pilchuck Creek Bridge | WA 9 over Pilchuck Creek | Open to traffic | Arch | 1916 | -- | 55.1 ft. | 120.1 ft. |
| Pilchuck River Bridge | 86th Street SE over Pilchuck River | Open to traffic | Through truss | 1924 | -- | 126.0 ft. | 228.0 ft. |
| Pioneer Highway Bridge | Pioneer Highway over Johnson Slough | Open to traffic | Arch | 1919 | -- | 20.0 ft. | 27.9 ft. |
| Pioneer Highway Bridge | Pioneer Highway over Thomsen Slough | Open to traffic | Arch | 1919 | -- | 40.0 ft. | 80.1 ft. |
| Sauk Prairie Road Bridge | Sauk Prairie Road over Sauk River | Open to traffic | Through truss | 1930 | -- | 200.1 ft. | 522.0 ft. |
| Skykomish River Bridge | US 2 over Skykomish River | Open to traffic | Deck truss | 1932 | -- | 200.1 ft. | 577.1 ft. |
| Skykomish River Bridge | WA 203 over Skykomish River | Open to traffic | Through truss | 1957 | -- | 339.9 ft. | 582.0 ft. |
| Smokey Point Blvd. Bridge | Smokey Point Blvd. over South Slough | Open to traffic | Arch | 1918 | -- | 80.1 ft. | 224.1 ft. |
| Smokey Point Blvd. Bridge | Smokey Point Blvd. over Portage Creek | Open to traffic | Arch | 1922 | -- | 60.0 ft. | 106.0 ft. |
| Snohomish River Bridge | WA 9 over Snohomish River | Open to traffic | Through truss | 1959 | -- | 299.9 ft. | 1110.9 ft. |
| South Fork Skykomish River Bridge | US 2 over South Fork Skykomish River | Open to traffic | Through truss | 1933 | -- | 240.2 ft. | 445.9 ft. |
| Steamboat Slough Bridge | WA 529 over Steamboat Slough | Open to traffic | Other | 1927 | -- | 180.1 ft. | 853.1 ft. |
| Stillaguamish River Bridge | I-5 over Stillaguamish River | Open to traffic | Through truss | 1933 | -- | 200.1 ft. | 859.0 ft. |
| Sultan River Bridge | US 2 over Sultan River | Open to traffic | Through truss | 1940 | -- | 240.2 ft. | 589.9 ft. |
| Wallace River Bridge | US 2 over Wallace River | Open to traffic | Through truss | 1940 | -- | 160.1 ft. | 235.9 ft. |