Every bridge in Island County, Washington
7 inventoried bridges, busiest first
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Island County, Washington, has 7 bridges in the 2025 National Bridge Inventory: 2 rated good, 5 fair, and 0 poor (as of ).
- This index lists every one of them, busiest first; each links to its own condition record.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR 20 over Deception Pass | 1935 | 18,797 | Fair |
| SR 20 over State Park Road/trail | 1935 | 18,797 | Good |
| SR 525 over Possession Sound | 2000 | 13,078 | Fair |
| SR 525 over Possession Sound | 1987 | 12,000 | Fair |
| SR 20 Extension over Keystone Harbor | 1979 | 1,863 | Fair |
| SR 525 over Possession Sound | 2003 | 1,078 | Good |
| E. Pioneer Way over Drainage Basin | 2006 | 30 | Fair |
Source: FHWA National Bridge Inventory, 2025.
Island County bridge conditions · Washington bridges by county.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.