Powerhouse Road over Naches River
GoodYakima County, Washington · 500 West of S. Naches RD · Structure no. 087725000000000
- Built
- 2008
- 17 years old
- Condition
- Good
- inspected March 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 377 ft
- 3 main spans
- Daily traffic
- 2,420
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
Powerhouse Road over Naches River is a prestressed concrete stringer/multi-beam or girder carrying Powerhouse Road over Naches River in Yakima County, Washington. It was built in 2008, so it is 17 years old, younger than the Washington average of 49.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 2,420 vehicles a day, roughly 10% of them trucks, projected to reach 2,904 by 2041. The structure is 377 ft (114.9 m) long and 42 ft wide. If it were closed, the detour would be 3.1 mi (5 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Powerhouse Road over Naches River built?
It was built in 2008, making it 17 years old in 2025.
What condition is Powerhouse Road over Naches River in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.
How much traffic does Powerhouse Road over Naches River carry?
About 2,420 vehicles per day (2021 count), of which roughly 10% are trucks.
How long is Powerhouse Road over Naches River?
The structure is 377 ft (114.9 m) long with a longest span of 160 ft (48.8 m) and a deck 42 ft wide.
Who owns Powerhouse Road over Naches River?
It is owned by the County Highway Agency.