Lower Whetstone Rd over Whetstone Creek
Columbia County, Washington · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Lower Whetstone Rd over Whetstone Creek in Columbia County, Washington, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1997, making it 28 years old at the 2025 inventory.
- It carries about 150 vehicles a day (traffic count year 2020).
- Its listed owner is the county highway agency.
- It is one of 39 of the 86 inventoried bridges in Columbia County rated fair (45.3%); 9 (10.5%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (fair), but component ratings moved: superstructure 6 to 7.
- Its most recent inspection on record is dated October 2024, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (46.30508, -118.18973)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 6 | 7 | Good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 62 ft |
| Location | 0.8 W Jct 9209 |
| NBI structure number | 084512000000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | October 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | U: unknown foundation, not evaluated for scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Washington department of transportation.
Busiest bridges in Columbia County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 12 over Touchet River | 1966 | 5,627 | Good |
| US 12 over Touchet River | 1966 | 4,556 | Good |
| US 12 over Warehouse Yard | 1933 | 2,442 | Poor |
| US 12 over UPRR | 1977 | 2,442 | Fair |
| US 12 over Patit Creek | 1933 | 2,218 | Fair |
| US 12 over Whetstone Creek | 2021 | 1,993 | Good |
All bridges nearby: Columbia County, WA bridge conditions · every bridge in Columbia County · Washington bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.