Bridge conditions in Clatsop County, Oregon
155 inventoried bridges · 8 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
8 of the 155 bridges the federal inventory lists in Clatsop County are rated poor; the rest split 50 good and 97 fair.
- 8 of the 155 bridges in Clatsop County, Oregon, are rated in poor condition (5.2%) in the 2025 National Bridge Inventory, as of .
- 50 bridges (32.3%) are rated good and 97 (62.6%) fair.
- The median Clatsop County bridge was built in 1972.
- The busiest poor-rated bridge is US101 (hwy 9) over Columbia River (built 1966), carrying about 9,117 vehicles a day.
Good 32.3% · Fair 62.6% · Poor 5.2% of 155 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 |
|---|---|---|---|
| US101 (hwy 9) over Columbia River | 1966 | 9,117 | Poor |
| Hwy 105 over Old Youngs Bay | 1921 | 7,781 | Poor |
| W Broadway over Necanicum Rv | 1924 | 7,315 | Poor |
| Hwy 105 over Lewis & Clark River | 1924 | 6,367 | Poor |
| Hwy 485 over Skipanon River | 1929 | 6,271 | Poor |
| US101 (Hwy 9) over Arch Cape Creek | 1937 | 5,508 | Poor |
| Klootchy Park Rd. over Necanicum River | 1960 | 409 | Poor |
| Raymond Rd over Klaskanine River | 1974 | 20 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US101 (hwy 9) over Columbia River | 1966 | 22,526 | Fair |
| US101 (hwy 9) over Columbia River | 1966 | 22,526 | Fair |
| US101 (hwy 9) over Columbia River & Hwy 92 | 1966 | 22,526 | Fair |
| US101 (Hwy 9) over Youngs Bay | 1964 | 20,338 | Fair |
| US101 (Hwy 9) over Shangri La Creek | 1960 | 16,793 | Fair |
| US101 (Hwy 9) over Neawanna Creek | 1930 | 16,489 | Fair |
| US101 (Hwy 9) over Mill Creek | 1957 | 16,489 | Fair |
| US101 (Hwy 9) over Private Road | 1930 | 16,193 | Fair |
| US101 (Hwy 9) over Skipanon River | 1980 | 16,106 | Fair |
| US101 (Hwy 9) over Necanicum River | 1930 | 14,464 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Oregon: Oregon 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.