State Route 20 over Salt Creek
FairColusa County, California · 03-COL-020-8.05 · Structure no. 15 0082
- Built
- 1940
- 85 years old, rebuilt 1975
- Condition
- Fair
- inspected March 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 22 ft
- 3 main spans
- Daily traffic
- 4,950
- 2017 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 20 over Salt Creek is a concrete continuous culvert carrying State Route 20 over Salt Creek in Colusa County, California. It was built in 1940 and reconstructed in 1975, so it is 85 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 4,950 vehicles a day, roughly 11% of them trucks, projected to reach 7,000 by 2040. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 39.8 mi (64 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 | 8 Very Good | No problems noted. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 20 over Salt Creek built?
It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1975.
What condition is State Route 20 over Salt 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 March 2023.
How much traffic does State Route 20 over Salt Creek carry?
About 4,950 vehicles per day (2017 count), of which roughly 11% are trucks.
How long is State Route 20 over Salt Creek?
The structure is 22 ft (6.7 m) long with a longest span of 8 ft (2.4 m).
Who owns State Route 20 over Salt Creek?
It is owned by the State Highway Agency.