Clay Mine Road over State Route 58
GoodKern County, California · 09-KER-058-R132.04 · Structure no. 50 0397
- Built
- 1974
- 51 years old
- Condition
- Good
- inspected June 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 251 ft
- 2 main spans
- Daily traffic
- 500
- 2018 count
- Owner
- State
- State Highway Agency
About this bridge
Clay Mine Road over State Route 58 is a prestressed concrete continuous box beam or girders - multiple carrying Clay Mine Road over State Route 58 in Kern County, California. It was built in 1974, so it is 51 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 500 vehicles a day, roughly 2% of them trucks, projected to reach 671 by 2040. The structure is 251 ft (76.5 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Clay Mine Road over State Route 58 built?
It was built in 1974, making it 51 years old in 2025.
What condition is Clay Mine Road over State Route 58 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 June 2023.
How much traffic does Clay Mine Road over State Route 58 carry?
About 500 vehicles per day (2018 count), of which roughly 2% are trucks.
How long is Clay Mine Road over State Route 58?
The structure is 251 ft (76.5 m) long with a longest span of 126 ft (38.4 m) and a deck 42 ft wide.
Who owns Clay Mine Road over State Route 58?
It is owned by the State Highway Agency.