County Line Road over State Route 99
GoodKern County, California · 06-KER-099-57.58-DLN · Structure no. 50 0215
- Built
- 1955
- 70 years old, rebuilt 2004
- Condition
- Good
- inspected March 2022
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 223 ft
- 4 main spans
- Daily traffic
- 15,475
- 2017 count
- Owner
- State
- State Highway Agency
About this bridge
County Line Road over State Route 99 is a concrete continuous box beam or girders - multiple carrying County Line Road over State Route 99 in Kern County, California. It was built in 1955 and reconstructed in 2004, so it is 70 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 15,475 vehicles a day, roughly 10% of them trucks, projected to reach 20,540 by 2044. The structure is 223 ft (68 m) long and 47 ft wide. If it were closed, the detour would be 3.1 mi (5 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 County Line Road over State Route 99 built?
It was built in 1955, making it 70 years old in 2025. It was reconstructed in 2004.
What condition is County Line Road over State Route 99 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 March 2022.
How much traffic does County Line Road over State Route 99 carry?
About 15,475 vehicles per day (2017 count), of which roughly 10% are trucks.
How long is County Line Road over State Route 99?
The structure is 223 ft (68 m) long with a longest span of 77 ft (23.5 m) and a deck 47 ft wide.
Who owns County Line Road over State Route 99?
It is owned by the State Highway Agency.