Grdn HAMILTON/4510 over Cottonwood Creek
GoodWhitman County, Washington · 0.07 MI S SR 23 · Structure no. 086576000000000
- Built
- 2000
- 25 years old
- Condition
- Good
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 62 ft
- 1 main span
- Daily traffic
- 50
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Grdn HAMILTON/4510 over Cottonwood Creek is a prestressed concrete stringer/multi-beam or girder carrying Grdn HAMILTON/4510 over Cottonwood Creek in Whitman County, Washington. It was built in 2000, so it is 25 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 50 vehicles a day, roughly 25% of them trucks, projected to reach 51 by 2039. The structure is 62 ft (18.9 m) long and 29 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Grdn HAMILTON/4510 over Cottonwood Creek built?
It was built in 2000, making it 25 years old in 2025.
What condition is Grdn HAMILTON/4510 over Cottonwood Creek 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 October 2024.
How much traffic does Grdn HAMILTON/4510 over Cottonwood Creek carry?
About 50 vehicles per day (2020 count), of which roughly 25% are trucks.
How long is Grdn HAMILTON/4510 over Cottonwood Creek?
The structure is 62 ft (18.9 m) long with a longest span of 60 ft (18.3 m) and a deck 29 ft wide.
Who owns Grdn HAMILTON/4510 over Cottonwood Creek?
It is owned by the County Highway Agency.