Bridge conditions in Skagit County, Washington
256 inventoried bridges · 6 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
6 of the 256 bridges the federal inventory lists in Skagit County are rated poor; the rest split 101 good and 149 fair.
- 6 of the 256 bridges in Skagit County, Washington, are rated in poor condition (2.3%) in the 2025 National Bridge Inventory, as of .
- 101 bridges (39.5%) are rated good and 149 (58.2%) fair.
- The median Skagit County bridge was built in 1967.
- The busiest poor-rated bridge is SR 9 over Skagit River (built 1959), carrying about 11,660 vehicles a day.
Good 39.5% · Fair 58.2% · Poor 2.3% of 256 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 9 over Skagit River | 1959 | 11,660 | Poor |
| Old Hwy 99 North over Thomas Creek | 1934 | 5,234 | Poor |
| SR 20 over Baker River | 1972 | 5,032 | Poor |
| SR 20 over Ship Hbr/guemes Channel | 1959 | 3,227 | Poor |
| F&s Grade Road over Samish River | 1974 | 630 | Poor |
| Scott Paper Co Rd over SR 20 | 1967 | 75 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-5 over Skagit River | 1955 | 39,245 | Fair |
| I-5 over RR and Cameron Way | 1954 | 37,729 | Fair |
| I-5 over SR 20 BNSF RR & City St | 1955 | 37,394 | Good |
| I-5 over I-5 Drainage | 1970 | 36,919 | Good |
| I-5 over I-5 Drainage | 1972 | 35,558 | Fair |
| I-5 over Hill Ditch | 1957 | 33,686 | Fair |
| I-5 over Hill Ditch | 1970 | 33,686 | Fair |
| I-5 NB over Fisher Creek | 2016 | 33,686 | Good |
| I-5 SB over Fisher Creek | 2016 | 33,686 | Good |
| I-5 over Gages Slough | 1954 | 32,965 | 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.