County Road 1090 over Butter Milk Creek
GoodOkanogan County, Washington · 11.1 W.SR20 @ Twisp · Structure no. 081847000000000
- Built
- 1960
- 65 years old, rebuilt 2007
- Condition
- Good
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Concrete Continuous
- Length
- 66 ft
- 3 main spans
- Daily traffic
- 70
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
County Road 1090 over Butter Milk Creek is a concrete continuous stringer/multi-beam or girder carrying County Road 1090 over Butter Milk Creek in Okanogan County, Washington. It was built in 1960 and reconstructed in 2007, 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 70 vehicles a day, roughly 5% of them trucks, projected to reach 90 by 2044. The structure is 66 ft (20.1 m) long and 16 ft wide. If it were closed, the detour would be 14.3 mi (23 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 1090 over Butter Milk Creek built?
It was built in 1960, making it 65 years old in 2025. It was reconstructed in 2007.
What condition is County Road 1090 over Butter Milk 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 September 2024.
How much traffic does County Road 1090 over Butter Milk Creek carry?
About 70 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is County Road 1090 over Butter Milk Creek?
The structure is 66 ft (20.1 m) long with a longest span of 45 ft (13.7 m) and a deck 16 ft wide.
Who owns County Road 1090 over Butter Milk Creek?
It is owned by the County Highway Agency.