State Route 29 over American Canyon Creek
FairNapa County, California · 04-NAP-029-0.56 · Structure no. 21 0040
- Built
- 1943
- 82 years old, rebuilt 1970
- Condition
- Fair
- inspected April 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 23 ft
- 2 main spans
- Daily traffic
- 48,000
- 2017 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 29 over American Canyon Creek is a concrete continuous culvert carrying State Route 29 over American Canyon Creek in Napa County, California. It was built in 1943 and reconstructed in 1970, so it is 82 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 48,000 vehicles a day, roughly 2% of them trucks, projected to reach 63,871 by 2046. The structure is 23 ft (7 m) long. 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 State Route 29 over American Canyon Creek built?
It was built in 1943, making it 82 years old in 2025. It was reconstructed in 1970.
What condition is State Route 29 over American Canyon 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 April 2024.
How much traffic does State Route 29 over American Canyon Creek carry?
About 48,000 vehicles per day (2017 count), of which roughly 2% are trucks.
How long is State Route 29 over American Canyon Creek?
The structure is 23 ft (7 m) long with a longest span of 11 ft (3.4 m).
Who owns State Route 29 over American Canyon Creek?
It is owned by the State Highway Agency.