Willow Creek RD over Willow Creek
GoodSonoma County, California · 1.5 MI E SH 1 · Structure no. 20C0387
- Built
- 1978
- 47 years old
- Condition
- Good
- inspected March 2024
- Type
- Slab
- Concrete Continuous
- Length
- 116 ft
- 4 main spans
- Daily traffic
- 170
- 2010 count
- Owner
- County
- County Highway Agency
About this bridge
Willow Creek RD over Willow Creek is a concrete continuous slab carrying Willow Creek RD over Willow Creek in Sonoma County, California. It was built in 1978, so it is 47 years old, younger than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 170 vehicles a day, roughly 1% of them trucks, projected to reach 107 by 2042. The structure is 116 ft (35.3 m) long and 29 ft wide. If it were closed, the detour would be 31.1 mi (50 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Willow Creek RD over Willow Creek built?
It was built in 1978, making it 47 years old in 2025.
What condition is Willow Creek RD over Willow Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2024.
How much traffic does Willow Creek RD over Willow Creek carry?
About 170 vehicles per day (2010 count), of which roughly 1% are trucks.
How long is Willow Creek RD over Willow Creek?
The structure is 116 ft (35.3 m) long with a longest span of 32 ft (9.8 m) and a deck 29 ft wide.
Who owns Willow Creek RD over Willow Creek?
It is owned by the County Highway Agency.