State Route 58 over Mill Street Drain
GoodKern County, California · 09-KER-058-R91.46-THPI · Structure no. 50 0411
- Built
- 1970
- 55 years old
- Condition
- Good
- inspected May 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 50 ft
- 4 main spans
- Daily traffic
- 42,400
- 2016 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 58 over Mill Street Drain is a concrete continuous culvert carrying State Route 58 over Mill Street Drain in Kern County, California. It was built in 1970, so it is 55 years old, older 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 42,400 vehicles a day, roughly 30% of them trucks, projected to reach 64,322 by 2040. The structure is 50 ft (15.2 m) long. If it were closed, the detour would be 1.2 mi (2 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 |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 58 over Mill Street Drain built?
It was built in 1970, making it 55 years old in 2025.
What condition is State Route 58 over Mill Street Drain 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 May 2023.
How much traffic does State Route 58 over Mill Street Drain carry?
About 42,400 vehicles per day (2016 count), of which roughly 30% are trucks.
How long is State Route 58 over Mill Street Drain?
The structure is 50 ft (15.2 m) long with a longest span of 10 ft (3 m).
Who owns State Route 58 over Mill Street Drain?
It is owned by the State Highway Agency.