Old 40 Mile RD over East Best Slough
FairYuba County, California · 0.4 MI E of 40 MI RD · Structure no. 16C0043
- Built
- 1927
- 98 years old
- Condition
- Fair
- inspected August 2024
- Type
- Tee Beam
- Concrete
- Length
- 25 ft
- 1 main span
- Daily traffic
- 50
- 2011 count
- Owner
- County
- County Highway Agency
About this bridge
Old 40 Mile RD over East Best Slough is a concrete tee beam carrying Old 40 Mile RD over East Best Slough in Yuba County, California. It was built in 1927, so it is 98 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 50 vehicles a day, roughly 1% of them trucks, projected to reach 111 by 2046. The structure is 25 ft (7.6 m) long and 22 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Old 40 Mile RD over East Best Slough built?
It was built in 1927, making it 98 years old in 2025.
What condition is Old 40 Mile RD over East Best 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 August 2024.
How much traffic does Old 40 Mile RD over East Best Slough carry?
About 50 vehicles per day (2011 count), of which roughly 1% are trucks.
How long is Old 40 Mile RD over East Best Slough?
The structure is 25 ft (7.6 m) long with a longest span of 24 ft (7.2 m) and a deck 22 ft wide.
Who owns Old 40 Mile RD over East Best Slough?
It is owned by the County Highway Agency.