Doyle Ranch RD over South Fork Kern River
FairKern County, California · 0.1 MI N of RTE 178 · Structure no. 50C0078
- Built
- 1968
- 57 years old
- Condition
- Fair
- inspected November 2024
- Type
- Slab
- Concrete Continuous
- Length
- 98 ft
- 3 main spans
- Daily traffic
- 140
- 2007 count
- Owner
- County
- County Highway Agency
About this bridge
Doyle Ranch RD over South Fork Kern River is a concrete continuous slab carrying Doyle Ranch RD over South Fork Kern River in Kern County, California. It was built in 1968, so it is 57 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 5 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 140 vehicles a day, roughly 5% of them trucks, projected to reach 400 by 2046. The structure is 98 ft (29.9 m) long and 29 ft wide. If it were closed, the detour would be 123.7 mi (199 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 |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 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 Doyle Ranch RD over South Fork Kern River built?
It was built in 1968, making it 57 years old in 2025.
What condition is Doyle Ranch RD over South Fork Kern River 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 November 2024.
How much traffic does Doyle Ranch RD over South Fork Kern River carry?
About 140 vehicles per day (2007 count), of which roughly 5% are trucks.
How long is Doyle Ranch RD over South Fork Kern River?
The structure is 98 ft (29.9 m) long with a longest span of 32 ft (9.8 m) and a deck 29 ft wide.
Who owns Doyle Ranch RD over South Fork Kern River?
It is owned by the County Highway Agency.