US101 (hwy 9) over South Prairie Creek
GoodTillamook County, Oregon · 023 MI S Tillamook · Structure no. 04642A009 06845
- Built
- 1949
- 76 years old
- Condition
- Good
- inspected March 2024
- Type
- Slab
- Concrete Continuous
- Length
- 79 ft
- 4 main spans
- Daily traffic
- 8,578
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
US101 (hwy 9) over South Prairie Creek is a concrete continuous slab carrying US101 (hwy 9) over South Prairie Creek in Tillamook County, Oregon. It was built in 1949, so it is 76 years old, older 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 8,578 vehicles a day, roughly 16% of them trucks, projected to reach 8,700 by 2042. The structure is 79 ft (24.1 m) long and 43 ft wide. 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US101 (hwy 9) over South Prairie Creek built?
It was built in 1949, making it 76 years old in 2025.
What condition is US101 (hwy 9) over South Prairie 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 2024.
How much traffic does US101 (hwy 9) over South Prairie Creek carry?
About 8,578 vehicles per day (2022 count), of which roughly 16% are trucks.
How long is US101 (hwy 9) over South Prairie Creek?
The structure is 79 ft (24.1 m) long with a longest span of 22 ft (6.6 m) and a deck 43 ft wide.
Who owns US101 (hwy 9) over South Prairie Creek?
It is owned by the State Highway Agency.