Bridge conditions in Island County, Washington
7 inventoried bridges · 0 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
None of the 7 inventoried bridges in Island County are rated in poor condition in the current federal inventory. 2 are rated good and 5 fair.
- 0 of the 7 bridges in Island County, Washington, are rated in poor condition (0.0%) in the 2025 National Bridge Inventory, as of .
- 2 bridges (28.6%) are rated good and 5 (71.4%) fair.
- The median Island County bridge was built in 1987.
Good 28.6% · Fair 71.4% · Poor 0.0% of 7 bridges
Bridges rated poor
No bridges in this county carry a poor rating in the current inventory.
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR 20 over State Park Road/trail | 1935 | 18,797 | Good |
| SR 20 over Deception Pass | 1935 | 18,797 | Fair |
| 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. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Washington: Washington bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.