State Route 99 over Lerdo Canal
FairKern County, California · 06-KER-099-R43.90L · Structure no. 50 0189
- Built
- 1936
- 89 years old, rebuilt 1969
- Condition
- Fair
- inspected March 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 28 ft
- 3 main spans
- Daily traffic
- 61,000
- 2020 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 1936 and reconstructed in 1969, so it is 89 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 61,000 vehicles a day, roughly 22% of them trucks, projected to reach 117,485 by 2042. The structure is 28 ft (8.5 m) long and 153 ft wide. If it were closed, the detour would be 8.1 mi (13 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 1936, making it 89 years old in 2025. It was reconstructed in 1969.
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 March 2024.
How much traffic does State Route 99 over Lerdo Canal carry?
About 61,000 vehicles per day (2020 count), of which roughly 22% are trucks.
How long is State Route 99 over Lerdo Canal?
The structure is 28 ft (8.5 m) long with a longest span of 8 ft (2.4 m) and a deck 153 ft wide.
Who owns State Route 99 over Lerdo Canal?
It is owned by the State Highway Agency.