County Road 1089 over Twisp River
GoodOkanogan County, Washington · 6.9 W.SR20 @ Twisp · Structure no. 080552000000000
- Built
- 1960
- 65 years old
- Condition
- Good
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Concrete Continuous
- Length
- 120 ft
- 3 main spans
- Daily traffic
- 65
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
County Road 1089 over Twisp River is a concrete continuous stringer/multi-beam or girder carrying County Road 1089 over Twisp River in Okanogan County, Washington. It was built in 1960, so it is 65 years old, older 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 65 vehicles a day, roughly 10% of them trucks, projected to reach 90 by 2040. The structure is 120 ft (36.6 m) long and 17 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 County Road 1089 over Twisp River built?
It was built in 1960, making it 65 years old in 2025.
What condition is County Road 1089 over Twisp River 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 September 2023.
How much traffic does County Road 1089 over Twisp River carry?
About 65 vehicles per day (2021 count), of which roughly 10% are trucks.
How long is County Road 1089 over Twisp River?
The structure is 120 ft (36.6 m) long with a longest span of 77 ft (23.5 m) and a deck 17 ft wide.
Who owns County Road 1089 over Twisp River?
It is owned by the County Highway Agency.