State Route 99 over Stockton Diverting Canal
FairSan Joaquin County, California · 10-SJ-099-20.12 · Structure no. 29 0116
- Built
- 1949
- 76 years old, rebuilt 2007
- Condition
- Fair
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 314 ft
- 8 main spans
- Daily traffic
- 83,000
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 99 over Stockton Diverting Canal is a steel continuous stringer/multi-beam or girder carrying State Route 99 over Stockton Diverting Canal in San Joaquin County, California. It was built in 1949 and reconstructed in 2007, so it is 76 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 83,000 vehicles a day, roughly 13% of them trucks, projected to reach 151,268 by 2046. The structure is 314 ft (95.6 m) long and 116 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 7 Good | Some minor problems. |
| 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 State Route 99 over Stockton Diverting Canal built?
It was built in 1949, making it 76 years old in 2025. It was reconstructed in 2007.
What condition is State Route 99 over Stockton Diverting Canal 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 June 2024.
How much traffic does State Route 99 over Stockton Diverting Canal carry?
About 83,000 vehicles per day (2009 count), of which roughly 13% are trucks.
How long is State Route 99 over Stockton Diverting Canal?
The structure is 314 ft (95.6 m) long with a longest span of 40 ft (12.2 m) and a deck 116 ft wide.
Who owns State Route 99 over Stockton Diverting Canal?
It is owned by the State Highway Agency.