Hwy 140 over Jackson Bottom Slough
Washington County, Oregon · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Hwy 140 over Jackson Bottom Slough in Washington County, Oregon, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- It was built in 1966, making it 59 years old at the 2025 inventory.
- It carries about 8,728 vehicles a day (traffic count year 2022).
- Its listed owner is the state 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 → (45.50546, -122.99096)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 4 | Poor condition |
Bridge details
| Structure | Prestressed concrete slab |
| Length | about 151 ft |
| Location | 0.9 Mi N of Hwy 29 |
| NBI structure number | 04962A140 00102 |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oregon department of transportation.
All bridges nearby: Washington County, OR bridge conditions · Oregon bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.