Nelson RD over Durham Slough
FairButte County, California · 4.6 MI W Midway RD · Structure no. 12C0401
- Built
- 1938
- 87 years old
- Condition
- Fair
- inspected November 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 23 ft
- 2 main spans
- Daily traffic
- 88
- 2019 count
- Owner
- County
- County Highway Agency
About this bridge
Nelson RD over Durham Slough is a concrete continuous culvert carrying Nelson RD over Durham Slough in Butte County, California. It was built in 1938, so it is 87 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 88 vehicles a day, roughly 28% of them trucks, projected to reach 156 by 2044. The structure is 23 ft (7 m) long and 27 ft wide. If it were closed, the detour would be 14.3 mi (23 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 Nelson RD over Durham Slough built?
It was built in 1938, making it 87 years old in 2025.
What condition is Nelson RD over Durham Slough 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 November 2024.
How much traffic does Nelson RD over Durham Slough carry?
About 88 vehicles per day (2019 count), of which roughly 28% are trucks.
How long is Nelson RD over Durham Slough?
The structure is 23 ft (7 m) long with a longest span of 11 ft (3.4 m) and a deck 27 ft wide.
Who owns Nelson RD over Durham Slough?
It is owned by the County Highway Agency.