Whisler Road over State Route 99
PoorKern County, California · 06-KER-099-R47.37 · Structure no. 50 0237
- Built
- 1970
- 55 years old
- Condition
- Poor
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 258 ft
- 2 main spans
- Daily traffic
- 900
- 2007 count
- Owner
- State
- State Highway Agency
About this bridge
Whisler Road over State Route 99 is a prestressed concrete continuous stringer/multi-beam or girder carrying Whisler Road over State Route 99 in Kern County, California. It was built in 1970, so it is 55 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 900 vehicles a day, roughly 20% of them trucks, projected to reach 1,145 by 2046. The structure is 258 ft (78.6 m) long and 42 ft wide. If it were closed, the detour would be 18 mi (29 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Whisler Road over State Route 99 built?
It was built in 1970, making it 55 years old in 2025.
What condition is Whisler Road over State Route 99 in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.
How much traffic does Whisler Road over State Route 99 carry?
About 900 vehicles per day (2007 count), of which roughly 20% are trucks.
How long is Whisler Road over State Route 99?
The structure is 258 ft (78.6 m) long with a longest span of 128 ft (39 m) and a deck 42 ft wide.
Who owns Whisler Road over State Route 99?
It is owned by the State Highway Agency.