State Route 99 over Poso Creek Overflow
GoodKern County, California · 06-KER-099-45.49 · Structure no. 50 0207
- Built
- 1951
- 74 years old, rebuilt 1970
- Condition
- Good
- inspected March 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 35 ft
- 4 main spans
- Daily traffic
- 51,000
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 99 over Poso Creek Overflow is a concrete continuous culvert carrying State Route 99 over Poso Creek Overflow in Kern County, California. It was built in 1951 and reconstructed in 1970, so it is 74 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 51,000 vehicles a day, roughly 27% of them trucks, projected to reach 116,492 by 2042. The structure is 35 ft (10.7 m) long and 154 ft wide. If it were closed, the detour would be 14.3 mi (23 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 |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 99 over Poso Creek Overflow built?
It was built in 1951, making it 74 years old in 2025. It was reconstructed in 1970.
What condition is State Route 99 over Poso Creek Overflow 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 2024.
How much traffic does State Route 99 over Poso Creek Overflow carry?
About 51,000 vehicles per day (2009 count), of which roughly 27% are trucks.
How long is State Route 99 over Poso Creek Overflow?
The structure is 35 ft (10.7 m) long with a longest span of 9 ft (2.7 m) and a deck 154 ft wide.
Who owns State Route 99 over Poso Creek Overflow?
It is owned by the State Highway Agency.