SR 20 over Coal Creek
GoodSkagit County, Washington · 3.9 E JCT SR 9 · Structure no. 0003478B0000000
- Built
- 1948
- 77 years old
- Condition
- Good
- inspected June 2024
- Type
- Tee Beam
- Concrete
- Length
- 38 ft
- 1 main span
- Daily traffic
- 9,612
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SR 20 over Coal Creek is a concrete tee beam carrying SR 20 over Coal Creek in Skagit County, Washington. It was built in 1948, so it is 77 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 9,612 vehicles a day, roughly 9% of them trucks, projected to reach 14,092 by 2039. The structure is 38 ft (11.6 m) long and 40 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 20 over Coal Creek built?
It was built in 1948, making it 77 years old in 2025.
What condition is SR 20 over Coal 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 June 2024.
How much traffic does SR 20 over Coal Creek carry?
About 9,612 vehicles per day (2023 count), of which roughly 9% are trucks.
How long is SR 20 over Coal Creek?
The structure is 38 ft (11.6 m) long with a longest span of 37 ft (11.3 m) and a deck 40 ft wide.
Who owns SR 20 over Coal Creek?
It is owned by the State Highway Agency.