State Route 29 over Garnett Creek Branch
FairNapa County, California · 04-NAP-029-38.96 · Structure no. 21 0111
- Built
- 1920
- 105 years old
- Condition
- Fair
- inspected April 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 50 ft
- 2 main spans
- Daily traffic
- 12,000
- 2017 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 29 over Garnett Creek Branch is a concrete continuous culvert carrying State Route 29 over Garnett Creek Branch in Napa County, California. It was built in 1920, so it is 105 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 12,000 vehicles a day, roughly 6% of them trucks, projected to reach 15,600 by 2040. The structure is 50 ft (15.2 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 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 29 over Garnett Creek Branch built?
It was built in 1920, making it 105 years old in 2025.
What condition is State Route 29 over Garnett Creek Branch 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 2023.
How much traffic does State Route 29 over Garnett Creek Branch carry?
About 12,000 vehicles per day (2017 count), of which roughly 6% are trucks.
How long is State Route 29 over Garnett Creek Branch?
The structure is 50 ft (15.2 m) long with a longest span of 8 ft (2.5 m) and a deck 29 ft wide.
Who owns State Route 29 over Garnett Creek Branch?
It is owned by the State Highway Agency.