Cayuse Ridge Road over Chesnimnus Ck
Wallowa County, Oregon · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Cayuse Ridge Road over Chesnimnus Ck in Wallowa County, Oregon, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1964, making it 61 years old at the 2025 inventory.
- It carries about 10 vehicles a day (traffic count year 2001).
- It is one of 10 of the 113 inventoried bridges in Wallowa County rated poor (8.8%); 10 (8.8%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- It was rated fair in the 2024 inventory and is now poor (substructure 6 to 4).
- Its most recent inspection on record is dated August 2024, on a 24-month routine inspection cycle.
- 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 → (45.7545, -116.99847)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 6 | 4 | Poor condition |
Bridge details
| Structure | Timber stringer or multi-beam girder |
| Length | about 32 ft |
| Location | Near Jct 4695/4695140 |
| NBI structure number | 061602000001034 |
| Condition class | Poor |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oregon department of transportation.
Busiest bridges in Wallowa County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Or 82 (hwy 010) over Prairie Creek | 1999 | 7,061 | Good |
| Or 82 (hwy 010) over Wallowa River (railroad) | 1966 | 5,160 | Good |
| Or 82 (hwy 010) over Trout Creek | 1988 | 5,160 | Good |
| Or 82 (hwy 010) over Prairie Creek | 1985 | 3,969 | Good |
| Or 82 (hwy 010) over Prairie Creek | 1980 | 3,924 | Good |
| Or 82 (hwy 010) over Lostine River | 1953 | 2,619 | Fair |
All bridges nearby: Wallowa County, OR bridge conditions · every bridge in Wallowa County · Oregon bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.