STEPHEN/3170 over Thorn Creek
GoodWhitman County, Washington · 0.29 MI W Pine Cty-Malden · Structure no. 086041000000000
- Built
- 1993
- 32 years old
- Condition
- Good
- inspected November 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 40 ft
- 1 main span
- Daily traffic
- 68
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
STEPHEN/3170 over Thorn Creek is a prestressed concrete stringer/multi-beam or girder carrying STEPHEN/3170 over Thorn Creek in Whitman County, Washington. It was built in 1993, so it is 32 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 68 vehicles a day, roughly 25% of them trucks, projected to reach 69 by 2044. The structure is 40 ft (12.2 m) long and 28 ft wide. If it were closed, the detour would be 21.1 mi (34 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 STEPHEN/3170 over Thorn Creek built?
It was built in 1993, making it 32 years old in 2025.
What condition is STEPHEN/3170 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 November 2023.
How much traffic does STEPHEN/3170 over Thorn Creek carry?
About 68 vehicles per day (2021 count), of which roughly 25% are trucks.
How long is STEPHEN/3170 over Thorn Creek?
The structure is 40 ft (12.2 m) long with a longest span of 39 ft (11.9 m) and a deck 28 ft wide.
Who owns STEPHEN/3170 over Thorn Creek?
It is owned by the County Highway Agency.