State Route 99 over Lerdo Canal
FairKern County, California · 06-KER-099-37.22 · Structure no. 50 0134
- Built
- 1913
- 112 years old, rebuilt 1968
- Condition
- Fair
- inspected January 2025
- Type
- Culvert
- Concrete Continuous
- Length
- 38 ft
- 3 main spans
- Daily traffic
- 90,000
- 2018 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 99 over Lerdo Canal is a concrete continuous culvert carrying State Route 99 over Lerdo Canal in Kern County, California. It was built in 1913 and reconstructed in 1968, so it is 112 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 90,000 vehicles a day, roughly 28% of them trucks, projected to reach 119,854 by 2047. The structure is 38 ft (11.6 m) long and 128 ft wide. If it were closed, the detour would be 11.2 mi (18 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 99 over Lerdo Canal built?
It was built in 1913, making it 112 years old in 2025. It was reconstructed in 1968.
What condition is State Route 99 over Lerdo Canal in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2025.
How much traffic does State Route 99 over Lerdo Canal carry?
About 90,000 vehicles per day (2018 count), of which roughly 28% are trucks.
How long is State Route 99 over Lerdo Canal?
The structure is 38 ft (11.6 m) long with a longest span of 12 ft (3.7 m) and a deck 128 ft wide.
Who owns State Route 99 over Lerdo Canal?
It is owned by the State Highway Agency.