Oak ST over Dowdall Creek
FairSonoma County, California · 0.1 MI W/O Riverside DR · Structure no. 20C0260
- Built
- 1940
- 85 years old
- Condition
- Fair
- inspected April 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 20 ft
- 2 main spans
- Daily traffic
- 350
- 2015 count
- Owner
- County
- County Highway Agency
About this bridge
Oak ST over Dowdall Creek is a concrete continuous culvert carrying Oak ST over Dowdall Creek in Sonoma County, California. It was built in 1940, 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 350 vehicles a day, roughly 1% of them trucks, projected to reach 535 by 2046. The structure is 20 ft (6.2 m) long and 34 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Oak ST over Dowdall Creek built?
It was built in 1940, making it 85 years old in 2025.
What condition is Oak ST over Dowdall 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 Oak ST over Dowdall Creek carry?
About 350 vehicles per day (2015 count), of which roughly 1% are trucks.
How long is Oak ST over Dowdall Creek?
The structure is 20 ft (6.2 m) long with a longest span of 10 ft (2.9 m) and a deck 34 ft wide.
Who owns Oak ST over Dowdall Creek?
It is owned by the County Highway Agency.