Coombs Canyon Rd over Birch Creek
Umatilla County, Oregon · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Coombs Canyon Rd over Birch Creek in Umatilla County, Oregon, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 7 (good condition) on the 0-9 scale.
- It was built in 1981, making it 44 years old at the 2025 inventory.
- It carries about 169 vehicles a day (traffic count year 2020).
- Its listed owner is the county highway agency.
- It is one of 94 of the 321 inventoried bridges in Umatilla County rated good (29.3%); 14 (4.4%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (good), but component ratings moved: superstructure 8 to 7.
- Its most recent inspection on record is dated July 2024, on a 24-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (45.5967, -118.81364)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 8 | Very good condition |
| Superstructure | 8 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 76 ft |
| Location | 0.8 Mi W of Hwy 395 |
| NBI structure number | 59C005135001970 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 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 Umatilla County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 395 (hwy 028) over Tutuilla Creek | 1969 | 24,592 | Fair |
| Stateline Road over Pine Creek | 1964 | 17,928 | Poor |
| I-84 (hwy 006) over Westland Irr Canal | 1967 | 16,309 | Fair |
| Goad Rd over I-84 (hwy 006) | 1969 | 13,736 | Good |
| I-82 (hwy 070) EB over Columbia River | 1955 | 12,412 | Fair |
| I-82 (hwy 070) WB over Columbia River | 1988 | 12,412 | Fair |
All bridges nearby: Umatilla County, OR bridge conditions · every bridge in Umatilla County · Oregon bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.