Old 99W over Hunters Creek
FairColusa County, California · 1.2 MI N Delevan RD · Structure no. 15C0051
- Built
- 1934
- 91 years old, rebuilt 1955
- Condition
- Fair
- inspected July 2023
- Type
- Slab
- Concrete Continuous
- Length
- 64 ft
- 3 main spans
- Daily traffic
- 669
- 2014 count
- Owner
- County
- County Highway Agency
About this bridge
Old 99W over Hunters Creek is a concrete continuous slab carrying Old 99W over Hunters Creek in Colusa County, California. It was built in 1934 and reconstructed in 1955, so it is 91 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 669 vehicles a day, roughly 10% of them trucks, projected to reach 1,027 by 2045. The structure is 64 ft (19.5 m) long and 40 ft wide. If it were closed, the detour would be 11.8 mi (19 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Old 99W over Hunters Creek built?
It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1955.
What condition is Old 99W over Hunters Creek 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 July 2023.
How much traffic does Old 99W over Hunters Creek carry?
About 669 vehicles per day (2014 count), of which roughly 10% are trucks.
How long is Old 99W over Hunters Creek?
The structure is 64 ft (19.5 m) long with a longest span of 19 ft (5.8 m) and a deck 40 ft wide.
Who owns Old 99W over Hunters Creek?
It is owned by the County Highway Agency.