State Route 99 SB over South Channel Dry Creek
FairSan Joaquin County, California · 10-SJ-099-38.51 · Structure no. 29 0077L
- Built
- 1938
- 87 years old, rebuilt 1986
- Condition
- Fair
- inspected July 2024
- Type
- Slab
- Concrete Continuous
- Length
- 838 ft
- 41 main spans
- Daily traffic
- 29,500
- 2014 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 99 SB over South Channel Dry Creek is a concrete continuous slab carrying State Route 99 SB over South Channel Dry Creek in San Joaquin County, California. It was built in 1938 and reconstructed in 1986, so it is 87 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 29,500 vehicles a day, roughly 13% of them trucks, projected to reach 45,632 by 2042. The structure is 838 ft (255.4 m) long and 50 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 99 SB over South Channel Dry Creek built?
It was built in 1938, making it 87 years old in 2025. It was reconstructed in 1986.
What condition is State Route 99 SB over South Channel Dry 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 July 2024.
How much traffic does State Route 99 SB over South Channel Dry Creek carry?
About 29,500 vehicles per day (2014 count), of which roughly 13% are trucks.
How long is State Route 99 SB over South Channel Dry Creek?
The structure is 838 ft (255.4 m) long with a longest span of 22 ft (6.7 m) and a deck 50 ft wide.
Who owns State Route 99 SB over South Channel Dry Creek?
It is owned by the State Highway Agency.