State Route 58 over Hart Flat Road
GoodKern County, California · 09-KER-058-80.24 · Structure no. 50 0253
- Built
- 1962
- 63 years old
- Condition
- Good
- inspected May 2023
- Type
- Tee Beam
- Concrete Continuous
- Length
- 100 ft
- 3 main spans
- Daily traffic
- 42,400
- 2016 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 58 over Hart Flat Road is a concrete continuous tee beam carrying State Route 58 over Hart Flat Road in Kern County, California. It was built in 1962, so it is 63 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 34% of them trucks, projected to reach 64,322 by 2040. The structure is 100 ft (30.5 m) long and 93 ft wide.
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 State Route 58 over Hart Flat Road built?
It was built in 1962, making it 63 years old in 2025.
What condition is State Route 58 over Hart Flat Road 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 Hart Flat Road carry?
About 42,400 vehicles per day (2016 count), of which roughly 34% are trucks.
How long is State Route 58 over Hart Flat Road?
The structure is 100 ft (30.5 m) long with a longest span of 40 ft (12.2 m) and a deck 93 ft wide.
Who owns State Route 58 over Hart Flat Road?
It is owned by the State Highway Agency.