Old Oregon Trail over Stillwater Creek Tribtry
GoodShasta County, California · 1.5 MI S ST RTE 299 · Structure no. 06C0329
- Built
- 1978
- 47 years old
- Condition
- Good
- inspected June 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 29 ft
- 2 main spans
- Daily traffic
- 5,450
- 2012 count
- Owner
- County
- County Highway Agency
About this bridge
Old Oregon Trail over Stillwater Creek Tribtry is a concrete continuous culvert carrying Old Oregon Trail over Stillwater Creek Tribtry in Shasta County, California. It was built in 1978, so it is 47 years old, younger than the California average of 54.8 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 5,450 vehicles a day, roughly 10% of them trucks, projected to reach 6,621 by 2043. The structure is 29 ft (8.9 m) long and 42 ft wide. If it were closed, the detour would be 9.9 mi (16 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 |
|---|---|---|
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Old Oregon Trail over Stillwater Creek Tribtry built?
It was built in 1978, making it 47 years old in 2025.
What condition is Old Oregon Trail over Stillwater Creek Tribtry 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 2023.
How much traffic does Old Oregon Trail over Stillwater Creek Tribtry carry?
About 5,450 vehicles per day (2012 count), of which roughly 10% are trucks.
How long is Old Oregon Trail over Stillwater Creek Tribtry?
The structure is 29 ft (8.9 m) long with a longest span of 14 ft (4.3 m) and a deck 42 ft wide.
Who owns Old Oregon Trail over Stillwater Creek Tribtry?
It is owned by the County Highway Agency.