CO RD #99W over Willow Creek Overflow
FairGlenn County, California · 0.2 MI N CO RD #45 · Structure no. 11C0190
- Built
- 1915
- 110 years old, rebuilt 1937
- Condition
- Fair
- inspected February 2025
- Type
- Culvert
- Concrete Continuous
- Length
- 36 ft
- 5 main spans
- Daily traffic
- 2,678
- 2009 count
- Owner
- County
- County Highway Agency
About this bridge
CO RD #99W over Willow Creek Overflow is a concrete continuous culvert carrying CO RD #99W over Willow Creek Overflow in Glenn County, California. It was built in 1915 and reconstructed in 1937, so it is 110 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 2,678 vehicles a day, roughly 20% of them trucks, projected to reach 3,077 by 2047. The structure is 36 ft (11 m) long and 39 ft wide. If it were closed, the detour would be 6.2 mi (10 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was CO RD #99W over Willow Creek Overflow built?
It was built in 1915, making it 110 years old in 2025. It was reconstructed in 1937.
What condition is CO RD #99W over Willow Creek Overflow in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2025.
How much traffic does CO RD #99W over Willow Creek Overflow carry?
About 2,678 vehicles per day (2009 count), of which roughly 20% are trucks.
How long is CO RD #99W over Willow Creek Overflow?
The structure is 36 ft (11 m) long with a longest span of 6 ft (1.8 m) and a deck 39 ft wide.
Who owns CO RD #99W over Willow Creek Overflow?
It is owned by the County Highway Agency.