Whitlow Road over Sonoma Creek #2
FairHumboldt County, California · 2.4 MI E of Elk Creek RD · Structure no. 04C0138
- Built
- 1966
- 59 years old, rebuilt 1989
- Condition
- Fair
- inspected February 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 42 ft
- 1 main span
- Daily traffic
- 53
- 2011 count
- Owner
- County
- County Highway Agency
About this bridge
Whitlow Road over Sonoma Creek #2 is a steel stringer/multi-beam or girder carrying Whitlow Road over Sonoma Creek #2 in Humboldt County, California. It was built in 1966 and reconstructed in 1989, so it is 59 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 5 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 53 vehicles a day, roughly 3% of them trucks, projected to reach 109 by 2042. The structure is 42 ft (12.8 m) long and 13 ft wide. If it were closed, the detour would be 123.7 mi (199 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Whitlow Road over Sonoma Creek #2 built?
It was built in 1966, making it 59 years old in 2025. It was reconstructed in 1989.
What condition is Whitlow Road over Sonoma Creek #2 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 February 2024.
How much traffic does Whitlow Road over Sonoma Creek #2 carry?
About 53 vehicles per day (2011 count), of which roughly 3% are trucks.
How long is Whitlow Road over Sonoma Creek #2?
The structure is 42 ft (12.8 m) long with a longest span of 40 ft (12.1 m) and a deck 13 ft wide.
Who owns Whitlow Road over Sonoma Creek #2?
It is owned by the County Highway Agency.