Lerdo Highway over State Route 99
GoodKern County, California · 06-KER-099-36.52 · Structure no. 50 0235
- Built
- 1961
- 64 years old
- Condition
- Good
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 246 ft
- 2 main spans
- Daily traffic
- 5,500
- 2018 count
- Owner
- State
- State Highway Agency
About this bridge
Lerdo Highway over State Route 99 is a prestressed concrete continuous stringer/multi-beam or girder carrying Lerdo Highway over State Route 99 in Kern County, California. It was built in 1961, so it is 64 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 5,500 vehicles a day, roughly 15% of them trucks, projected to reach 6,121 by 2045. The structure is 246 ft (75 m) long and 94 ft wide. If it were closed, the detour would be 19.9 mi (32 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 Lerdo Highway over State Route 99 built?
It was built in 1961, making it 64 years old in 2025.
What condition is Lerdo Highway 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 October 2023.
How much traffic does Lerdo Highway over State Route 99 carry?
About 5,500 vehicles per day (2018 count), of which roughly 15% are trucks.
How long is Lerdo Highway over State Route 99?
The structure is 246 ft (75 m) long with a longest span of 120 ft (36.6 m) and a deck 94 ft wide.
Who owns Lerdo Highway over State Route 99?
It is owned by the State Highway Agency.