Sonora RD over Rock Creek
FairSan Joaquin County, California · 1.5 MI Southeast S.H. 4 · Structure no. 29C0039
- Built
- 1970
- 55 years old
- Condition
- Fair
- inspected November 2024
- Type
- Slab
- Concrete Continuous
- Length
- 138 ft
- 5 main spans
- Daily traffic
- 196
- 2013 count
- Owner
- County
- County Highway Agency
About this bridge
Sonora RD over Rock Creek is a concrete continuous slab carrying Sonora RD over Rock Creek in San Joaquin 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 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 196 vehicles a day, roughly 1% of them trucks, projected to reach 362 by 2044. The structure is 138 ft (42.1 m) long and 33 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 |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Sonora RD over Rock Creek built?
It was built in 1970, making it 55 years old in 2025.
What condition is Sonora RD over Rock Creek 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 Sonora RD over Rock Creek carry?
About 196 vehicles per day (2013 count), of which roughly 1% are trucks.
How long is Sonora RD over Rock Creek?
The structure is 138 ft (42.1 m) long with a longest span of 30 ft (9.1 m) and a deck 33 ft wide.
Who owns Sonora RD over Rock Creek?
It is owned by the County Highway Agency.