SHIELDS/4500 over Palouse River
GoodWhitman County, Washington · 4.77 MI SW SR 23 · Structure no. 085769000000000
- Built
- 1990
- 35 years old
- Condition
- Good
- inspected August 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 220 ft
- 2 main spans
- Daily traffic
- 52
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
SHIELDS/4500 over Palouse River is a prestressed concrete tee beam carrying SHIELDS/4500 over Palouse River in Whitman County, Washington. It was built in 1990, so it is 35 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 52 vehicles a day, roughly 25% of them trucks, projected to reach 53 by 2039. The structure is 220 ft (67.1 m) long and 29 ft wide. If it were closed, the detour would be 29.2 mi (47 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 SHIELDS/4500 over Palouse River built?
It was built in 1990, making it 35 years old in 2025.
What condition is SHIELDS/4500 over 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 August 2024.
How much traffic does SHIELDS/4500 over Palouse River carry?
About 52 vehicles per day (2020 count), of which roughly 25% are trucks.
How long is SHIELDS/4500 over Palouse River?
The structure is 220 ft (67.1 m) long with a longest span of 109 ft (33.2 m) and a deck 29 ft wide.
Who owns SHIELDS/4500 over Palouse River?
It is owned by the County Highway Agency.