Powerhouse Road over Low Flow Channel
Yakima County, Washington · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Powerhouse Road over Low Flow Channel in Yakima County, Washington, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 2007, making it 18 years old at the 2025 inventory.
- It carries about 2,400 vehicles a day (traffic count year 2019).
- Its listed owner is the county highway agency.
- It is one of 323 of the 557 inventoried bridges in Yakima County rated good (58.0%); 31 (5.6%) 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 → (46.63312, -120.58823)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Steel culvert |
| Length | about 22 ft |
| Location | 1000 West of S Naches Rd |
| NBI structure number | 087726000000000 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Washington department of transportation.
Busiest bridges in Yakima County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Terrace Heights Dr over 18TH Street | 1979 | 28,500 | Fair |
| I-82 over Beech St | 1962 | 25,909 | Good |
| I-82 over Beech St | 1962 | 25,909 | Good |
| I-82 over Overflow Channel | 1960 | 25,406 | Fair |
| I-82 over Overflow Channel | 1960 | 25,406 | Fair |
| I-82 over Np Ry Moxee | 1961 | 25,406 | Poor |
All bridges nearby: Yakima County, WA bridge conditions · every bridge in Yakima County · Washington bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.