Bridge conditions in San Juan County, Washington
13 inventoried bridges · 0 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
San Juan County is one of the counties with a clean sheet: 13 bridges on the federal inventory and not one rated poor. 9 carry a fair rating, which means wear worth watching but no structural deficiency.
- 0 of the 13 bridges in San Juan County, Washington, are rated in poor condition (0.0%) in the 2025 National Bridge Inventory, as of .
- 4 bridges (30.8%) are rated good and 9 (69.2%) fair.
- The median San Juan County bridge was built in 1981.
Good 30.8% · Fair 69.2% · Poor 0.0% of 13 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 Extension over Friday Hbr-san Juan Chan | 1968 | 2,587 | Fair |
| SR 20 Extension over Friday Hbr-san Juan Chan | 2005 | 2,587 | Good |
| SR 20 over Harney Channel | 1959 | 2,322 | Good |
| SR 20 over Harney Channel | 1979 | 2,150 | Fair |
| Deer Harbor Road over Crow Valley Drainage | 2001 | 1,826 | Fair |
| Orcas to Olga road over Cascade Creek | 1921 | 1,607 | Fair |
| Extension of SR 20 over Upright Channel | 1981 | 1,349 | Fair |
| Extension of SR 20 over Upright Channel | 1981 | 1,349 | Fair |
| Point Lawrence Rd over Buck Bay | 2011 | 939 | Good |
| Channel Road over Cayou Valley Lagoon | 2016 | 516 | Good |
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.