Bridge conditions in Jefferson County, Washington
97 inventoried bridges · 5 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
5 of the 97 bridges the federal inventory lists in Jefferson County are rated poor; the rest split 58 good and 34 fair.
- 5 of the 97 bridges in Jefferson County, Washington, are rated in poor condition (5.2%) in the 2025 National Bridge Inventory, as of .
- 58 bridges (59.8%) are rated good and 34 (35.1%) fair.
- The median Jefferson County bridge was built in 1981.
- The busiest poor-rated bridge is SR 104 Westhalf over Hood Canal (built 1982), carrying about 18,159 vehicles a day.
Good 59.8% · Fair 35.1% · Poor 5.2% of 97 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR 104 Westhalf over Hood Canal | 1982 | 18,159 | Poor |
| US 101 over Big Quilcene River | 1936 | 3,525 | Poor |
| SR 20 over Puget Snd @ Pt Townsend | 1955 | 63 | Poor |
| Old Tarboo Road over Tarboo Creek | 2005 | 50 | Poor |
| No Data Entered over Duckabush River | 1960 | 25 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR 104 Westhalf over Hood Canal | 1982 | 18,159 | Poor |
| SR 104 over Hood Canal | 2007 | 18,159 | Fair |
| SR 20 over Ped Trail | 1956 | 17,453 | Good |
| US 101 over Salmon Creek | 1986 | 13,724 | Good |
| US 101 over Snow Creek | 1986 | 13,724 | Good |
| SR 19 over Chimacum Creek | 1916 | 8,718 | Fair |
| SR 104 over Quilcene-chimakum Rd | 1964 | 8,469 | Good |
| SR 20 over Eaglemount Half Bridge | 1956 | 5,930 | Good |
| SR 20 over Snow Creek | 1940 | 4,980 | Fair |
| Center Road over Chimacum Creek | 1955 | 4,080 | 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.