12th ST over Rohner Creek
FairHumboldt County, California · 0.1 Mile North Newburg RD · Structure no. 04C0235
- Built
- 1935
- 90 years old
- Condition
- Fair
- inspected August 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 33 ft
- 3 main spans
- Daily traffic
- 3,160
- 2015 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
12th ST over Rohner Creek is a concrete continuous culvert carrying 12th ST over Rohner Creek in Humboldt County, California. It was built in 1935, so it is 90 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 3,160 vehicles a day, roughly 5% of them trucks, projected to reach 6,500 by 2042. The structure is 33 ft (10.1 m) long. 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 | 9 Excellent | 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 12th ST over Rohner Creek built?
It was built in 1935, making it 90 years old in 2025.
What condition is 12th ST over Rohner 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 August 2024.
How much traffic does 12th ST over Rohner Creek carry?
About 3,160 vehicles per day (2015 count), of which roughly 5% are trucks.
How long is 12th ST over Rohner Creek?
The structure is 33 ft (10.1 m) long with a longest span of 10 ft (3 m).
Who owns 12th ST over Rohner Creek?
It is owned by the City or Municipal Highway Agency.