SR 20 over Obrien Creek
GoodFerry County, Washington · 4.1 E JCT SR 21 · Structure no. 0016144A0000000
- Built
- 2002
- 23 years old
- Condition
- Good
- inspected June 2024
- Type
- Slab
- Prestressed Concrete
- Length
- 21 ft
- 1 main span
- Daily traffic
- 774
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SR 20 over Obrien Creek is a prestressed concrete slab carrying SR 20 over Obrien Creek in Ferry County, Washington. It was built in 2002, so it is 23 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 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 774 vehicles a day, roughly 14% of them trucks, projected to reach 1,274 by 2039. The structure is 21 ft (6.4 m) long and 36 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 | 8 Very Good | No problems noted. |
| 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 SR 20 over Obrien Creek built?
It was built in 2002, making it 23 years old in 2025.
What condition is SR 20 over Obrien 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 Obrien Creek carry?
About 774 vehicles per day (2023 count), of which roughly 14% are trucks.
How long is SR 20 over Obrien Creek?
The structure is 21 ft (6.4 m) long with a longest span of 20 ft (6.1 m) and a deck 36 ft wide.
Who owns SR 20 over Obrien Creek?
It is owned by the State Highway Agency.