US 12 over Alpowa CR
Asotin County, Washington · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 12 over Alpowa CR in Asotin County, Washington, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1975, making it 50 years old at the 2025 inventory.
- It carries about 3,159 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 14 of the 28 inventoried bridges in Asotin County rated fair (50.0%); 0 (0.0%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated June 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 → (46.41186, -117.21403)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous prestressed concrete stringer or multi-beam girder |
| Length | about 212 ft |
| Location | 3.0 E Garfield Co |
| NBI structure number | 0009660A0000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | June 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 Washington department of transportation.
Busiest bridges in Asotin County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 12 over Snake River | 1939 | 21,000 | Fair |
| Fleshman Way over Snake River | 1982 | 21,000 | Fair |
| Fleshman Way over State Route 129 | 1982 | 17,789 | Good |
| 13TH Street over Fleshman Way | 1997 | 6,167 | Good |
| SR 128 over Snake River | 1979 | 5,160 | Fair |
| SR 129 over Asotin Creek | 1956 | 4,450 | Good |
All bridges nearby: Asotin County, WA bridge conditions · every bridge in Asotin County · Washington bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.