| Name | Location | Status | Design | Year Built | Year Lost | Span Length | Total Length |
|---|
| Gorge Creek Bridge | WA 20 over Gorge Creek | Open to traffic | Steel arch | 1955 | -- | 180.1 ft. | 247.1 ft. |
| Mosquito Lake Road Bridge | Mosquito Lake Road over Middle Fork Nooksack River | Open to traffic | Pennsylvania through truss | 1915 | -- | 337.9 ft. | 416.0 ft. |
| Nooksack River Bridge | WA 539 over Nooksack River | Open to traffic | Through truss | 1950 | -- | 339.9 ft. | 576.1 ft. |
| Nooksack River Bridge | I-5 over Nooksack River | Open to traffic | Through truss | 1955 | -- | 220.2 ft. | 904.9 ft. |
| North Fork Nooksack River Bridge | WA 9 over North Fork Nooksack River | Open to traffic | Through truss | 1954 | -- | 160.1 ft. | 410.1 ft. |
| Potter Road Bridge | Potter Road over South Fork | Open to traffic | Through truss | 1927 | -- | 149.9 ft. | 243.1 ft. |
| Prospect Street Bridge | Prospect Street over Whatcom Creek | Open to traffic | Arch | 1920 | -- | 67.9 ft. | 67.9 ft. |
| Slater Road Bridge | Slater Road over Nooksack River | Open to traffic | Through truss | 1957 | -- | 240.2 ft. | 246.1 ft. |
| Warnick Bridge | WA 542 over North Fork Nooksack River | Open to traffic | Through truss | 1931 | -- | 149.9 ft. | 251.0 ft. |