Whitlow RD over Sonoma Creek
GoodHumboldt County, California · 1 MI N of Sequoia RD · Structure no. 04C0137
- Built
- 1986
- 39 years old
- Condition
- Good
- inspected February 2022
- Type
- Box Beam or Girders - Multiple
- Concrete
- Length
- 62 ft
- 1 main span
- Daily traffic
- 53
- 2008 count
- Owner
- County
- County Highway Agency
About this bridge
Whitlow RD over Sonoma Creek is a concrete box beam or girders - multiple carrying Whitlow RD over Sonoma Creek in Humboldt County, California. It was built in 1986, so it is 39 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 53 vehicles a day, projected to reach 65 by 2040. The structure is 62 ft (19 m) long and 25 ft wide. If it were closed, the detour would be 123.7 mi (199 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Whitlow RD over Sonoma Creek built?
It was built in 1986, making it 39 years old in 2025.
What condition is Whitlow RD over Sonoma 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 February 2022.
How much traffic does Whitlow RD over Sonoma Creek carry?
About 53 vehicles per day (2008 count).
How long is Whitlow RD over Sonoma Creek?
The structure is 62 ft (19 m) long with a longest span of 60 ft (18.3 m) and a deck 25 ft wide.
Who owns Whitlow RD over Sonoma Creek?
It is owned by the County Highway Agency.