SR 20 over Little Boulder Creek
GoodOkanogan County, Washington · 18.8 E Chelan CO · Structure no. 0016979A0000000
- Built
- 2005
- 20 years old
- Condition
- Good
- inspected July 2021
- Type
- Culvert
- Steel
- Length
- 29 ft
- 1 main span
- Daily traffic
- 1,280
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SR 20 over Little Boulder Creek is a steel culvert carrying SR 20 over Little Boulder Creek in Okanogan County, Washington. It was built in 2005, so it is 20 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 1,280 vehicles a day, roughly 9% of them trucks, projected to reach 1,592 by 2039. The structure is 29 ft (8.8 m) long. If it were closed, the detour would be 5 mi (8 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 20 over Little Boulder Creek built?
It was built in 2005, making it 20 years old in 2025.
What condition is SR 20 over Little Boulder 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 July 2021.
How much traffic does SR 20 over Little Boulder Creek carry?
About 1,280 vehicles per day (2023 count), of which roughly 9% are trucks.
How long is SR 20 over Little Boulder Creek?
The structure is 29 ft (8.8 m) long with a longest span of 29 ft (8.8 m).
Who owns SR 20 over Little Boulder Creek?
It is owned by the State Highway Agency.