Knox Road 3817 over Tunk Creek
GoodOkanogan County, Washington · 2.7 Mi.W.Synarep · Structure no. 082287000000000
- Built
- 1976
- 49 years old
- Condition
- Good
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 30 ft
- 1 main span
- Daily traffic
- 22
- 2019 count
- Owner
- County
- County Highway Agency
About this bridge
Knox Road 3817 over Tunk Creek is a prestressed concrete stringer/multi-beam or girder carrying Knox Road 3817 over Tunk Creek in Okanogan County, Washington. It was built in 1976, so it is 49 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 22 vehicles a day, roughly 14% of them trucks, projected to reach 50 by 2041. The structure is 30 ft (9.1 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 Knox Road 3817 over Tunk Creek built?
It was built in 1976, making it 49 years old in 2025.
What condition is Knox Road 3817 over Tunk 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 2023.
How much traffic does Knox Road 3817 over Tunk Creek carry?
About 22 vehicles per day (2019 count), of which roughly 14% are trucks.
How long is Knox Road 3817 over Tunk Creek?
The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.9 m) and a deck 24 ft wide.
Who owns Knox Road 3817 over Tunk Creek?
It is owned by the County Highway Agency.