Old US 20- Hwy 033 over W Olalla Slough
Lincoln County, Oregon · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Old US 20- Hwy 033 over W Olalla Slough in Lincoln County, Oregon, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- It was built in 1936, making it 89 years old at the 2025 inventory.
- It carries about 6,800 vehicles a day (traffic count year 2020).
- Its listed owner is the county highway agency.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (44.63471, -123.92586)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 4 | Poor condition |
Bridge details
| Structure | Timber stringer or multi-beam girder |
| Length | about 68 ft |
| Location | 0243 M Jct Hwy 181 |
| NBI structure number | 02275 033F00817 |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oregon department of transportation.
All bridges nearby: Lincoln County, OR bridge conditions · Oregon bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.