Silverado Trail over Dutch Henry Creek
FairNapa County, California · .4 MI N/O Larkmead Lane · Structure no. 21C0030
- Built
- 1938
- 87 years old, rebuilt 1976
- Condition
- Fair
- inspected May 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 36 ft
- 4 main spans
- Daily traffic
- 4,310
- 2005 count
- Owner
- County
- County Highway Agency
About this bridge
Silverado Trail over Dutch Henry Creek is a concrete continuous culvert carrying Silverado Trail over Dutch Henry Creek in Napa County, California. It was built in 1938 and reconstructed in 1976, so it is 87 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 4,310 vehicles a day, roughly 10% of them trucks, projected to reach 6,609 by 2040. The structure is 36 ft (11.1 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 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 Silverado Trail over Dutch Henry Creek built?
It was built in 1938, making it 87 years old in 2025. It was reconstructed in 1976.
What condition is Silverado Trail over Dutch Henry 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 May 2023.
How much traffic does Silverado Trail over Dutch Henry Creek carry?
About 4,310 vehicles per day (2005 count), of which roughly 10% are trucks.
How long is Silverado Trail over Dutch Henry Creek?
The structure is 36 ft (11.1 m) long with a longest span of 8 ft (2.4 m) and a deck 42 ft wide.
Who owns Silverado Trail over Dutch Henry Creek?
It is owned by the County Highway Agency.