Olson Rd. over Clatskanie River
GoodColumbia County, Oregon · 010 MI S City of Clatskan · Structure no. 13779A405200017
- Built
- 1977
- 48 years old
- Condition
- Good
- inspected May 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 97 ft
- 1 main span
- Daily traffic
- 311
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Olson Rd. over Clatskanie River is a prestressed concrete tee beam carrying Olson Rd. over Clatskanie River in Columbia County, Oregon. It was built in 1977, so it is 48 years old, younger than the Oregon average of 49.9 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 311 vehicles a day, roughly 10% of them trucks, projected to reach 351 by 2025. The structure is 97 ft (29.6 m) long and 24 ft wide. If it were closed, the detour would be 123.7 mi (199 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Olson Rd. over Clatskanie River built?
It was built in 1977, making it 48 years old in 2025.
What condition is Olson Rd. over Clatskanie River 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 May 2023.
How much traffic does Olson Rd. over Clatskanie River carry?
About 311 vehicles per day (2020 count), of which roughly 10% are trucks.
How long is Olson Rd. over Clatskanie River?
The structure is 97 ft (29.6 m) long with a longest span of 96 ft (29.3 m) and a deck 24 ft wide.
Who owns Olson Rd. over Clatskanie River?
It is owned by the County Highway Agency.