Zarbach /3605 over Thorn Creek
GoodWhitman County, Washington · 0.19 MI N Thorn Creek · Structure no. 088460000000000
- Built
- 2012
- 13 years old
- Condition
- Good
- inspected August 2024
- Type
- Slab
- Prestressed Concrete
- Length
- 24 ft
- 1 main span
- Daily traffic
- 5
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Zarbach /3605 over Thorn Creek is a prestressed concrete slab carrying Zarbach /3605 over Thorn Creek in Whitman County, Washington. It was built in 2012, so it is 13 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 5 vehicles a day, roughly 40% of them trucks, projected to reach 6 by 2039. The structure is 24 ft (7.3 m) long and 24 ft wide. If it were closed, the detour would be 98.8 mi (159 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 Zarbach /3605 over Thorn Creek built?
It was built in 2012, making it 13 years old in 2025.
What condition is Zarbach /3605 over Thorn 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 August 2024.
How much traffic does Zarbach /3605 over Thorn Creek carry?
About 5 vehicles per day (2020 count), of which roughly 40% are trucks.
How long is Zarbach /3605 over Thorn Creek?
The structure is 24 ft (7.3 m) long with a longest span of 22 ft (6.7 m) and a deck 24 ft wide.
Who owns Zarbach /3605 over Thorn Creek?
It is owned by the County Highway Agency.