SR 20 over Diobsud Creek
GoodSkagit County, Washington · 10.9 E JCT SR 530 · Structure no. 0003761A0000000
- Built
- 1950
- 75 years old, rebuilt 1981
- Condition
- Good
- inspected March 2023
- Type
- Tee Beam
- Concrete Continuous
- Length
- 102 ft
- 3 main spans
- Daily traffic
- 1,930
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SR 20 over Diobsud Creek is a concrete continuous tee beam carrying SR 20 over Diobsud Creek in Skagit County, Washington. It was built in 1950 and reconstructed in 1981, so it is 75 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 1,930 vehicles a day, roughly 7% of them trucks, projected to reach 2,848 by 2040. The structure is 102 ft (31.1 m) long and 39 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 | 8 Very Good | No problems noted. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 20 over Diobsud Creek built?
It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1981.
What condition is SR 20 over Diobsud 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 March 2023.
How much traffic does SR 20 over Diobsud Creek carry?
About 1,930 vehicles per day (2023 count), of which roughly 7% are trucks.
How long is SR 20 over Diobsud Creek?
The structure is 102 ft (31.1 m) long with a longest span of 70 ft (21.3 m) and a deck 39 ft wide.
Who owns SR 20 over Diobsud Creek?
It is owned by the State Highway Agency.