Old SR 26 Rd over Palouse River Overrun
Adams County, Washington · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Old SR 26 Rd over Palouse River Overrun in Adams County, Washington, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 7 (good condition) on the 0-9 scale.
- It was built in 1944 and reconstructed in 2013, making it 81 years old at the 2025 inventory.
- It carries about 96 vehicles a day (traffic count year 2020).
- Its listed owner is the county highway agency.
- It is one of 65 of the 187 inventoried bridges in Adams County rated good (34.8%); 23 (12.3%) are rated poor.
- 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 → (46.75997, -118.14758)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 8 | Very good condition |
| Superstructure | 8 | Very good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete slab |
| Length | about 28 ft |
| Location | 00.03 Mi SW Gray Rd |
| NBI structure number | 083589000000000 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Washington department of transportation.
Busiest bridges in Adams County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-90 over BNSF Railroad | 1968 | 10,667 | Poor |
| I-90 over BNSF Railroad | 1968 | 10,667 | Poor |
| I-90 over Hills North Rd | 1958 | 10,614 | Fair |
| I-90 over Hills North Rd | 1958 | 10,614 | Fair |
| I-90 over SR 261 | 1958 | 8,405 | Poor |
| I-90 over SR 261 | 1952 | 8,405 | Fair |
All bridges nearby: Adams County, WA bridge conditions · every bridge in Adams County · Washington bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.