State Route 299 over Willow Creek
GoodLassen County, California · 02-LAS-299-24.01 · Structure no. 07 0051
- Built
- 1929
- 96 years old, rebuilt 1979
- Condition
- Good
- inspected May 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 83 ft
- 9 main spans
- Daily traffic
- 1,050
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 299 over Willow Creek is a concrete continuous culvert carrying State Route 299 over Willow Creek in Lassen County, California. It was built in 1929 and reconstructed in 1979, so it is 96 years old, older 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 1,050 vehicles a day, roughly 22% of them trucks, projected to reach 1,326 by 2040. The structure is 83 ft (25.3 m) long. 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 | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 299 over Willow Creek built?
It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1979.
What condition is State Route 299 over Willow 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 May 2023.
How much traffic does State Route 299 over Willow Creek carry?
About 1,050 vehicles per day (2009 count), of which roughly 22% are trucks.
How long is State Route 299 over Willow Creek?
The structure is 83 ft (25.3 m) long with a longest span of 8 ft (2.4 m).
Who owns State Route 299 over Willow Creek?
It is owned by the State Highway Agency.