Big Alkali / 7005 over Alkali Flat Creek
GoodWhitman County, Washington · 7.44 MI NE Little Gse Dam · Structure no. 088345000000000
- Built
- 2011
- 14 years old
- Condition
- Good
- inspected December 2023
- Type
- Slab
- Prestressed Concrete
- Length
- 65 ft
- 1 main span
- Daily traffic
- 128
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
Big Alkali / 7005 over Alkali Flat Creek is a prestressed concrete slab carrying Big Alkali / 7005 over Alkali Flat Creek in Whitman County, Washington. It was built in 2011, so it is 14 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 128 vehicles a day, roughly 25% of them trucks, projected to reach 128 by 2044. The structure is 65 ft (19.8 m) long and 36 ft wide. If it were closed, the detour would be 18 mi (29 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 Big Alkali / 7005 over Alkali Flat Creek built?
It was built in 2011, making it 14 years old in 2025.
What condition is Big Alkali / 7005 over Alkali Flat 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 December 2023.
How much traffic does Big Alkali / 7005 over Alkali Flat Creek carry?
About 128 vehicles per day (2021 count), of which roughly 25% are trucks.
How long is Big Alkali / 7005 over Alkali Flat Creek?
The structure is 65 ft (19.8 m) long with a longest span of 64 ft (19.4 m) and a deck 36 ft wide.
Who owns Big Alkali / 7005 over Alkali Flat Creek?
It is owned by the County Highway Agency.