ARMSTRONG/5490 over South Fork Palouse River
GoodWhitman County, Washington · 0.77 MI NE SR 195 · Structure no. 085821000000000
- Built
- 1991
- 34 years old
- Condition
- Good
- inspected December 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 105 ft
- 1 main span
- Daily traffic
- 74
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
ARMSTRONG/5490 over South Fork Palouse River is a prestressed concrete tee beam carrying ARMSTRONG/5490 over South Fork Palouse River in Whitman County, Washington. It was built in 1991, so it is 34 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 74 vehicles a day, roughly 25% of them trucks, projected to reach 75 by 2039. The structure is 105 ft (32 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was ARMSTRONG/5490 over South Fork Palouse River built?
It was built in 1991, making it 34 years old in 2025.
What condition is ARMSTRONG/5490 over South Fork Palouse 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 December 2024.
How much traffic does ARMSTRONG/5490 over South Fork Palouse River carry?
About 74 vehicles per day (2020 count), of which roughly 25% are trucks.
How long is ARMSTRONG/5490 over South Fork Palouse River?
The structure is 105 ft (32 m) long with a longest span of 103 ft (31.4 m) and a deck 32 ft wide.
Who owns ARMSTRONG/5490 over South Fork Palouse River?
It is owned by the County Highway Agency.