State Route 99 over State Route 120
FairSan Joaquin County, California · 10-SJ-099-6.65-MTCA · Structure no. 29 0125
- Built
- 2007
- 18 years old
- Condition
- Fair
- inspected October 2024
- Type
- Box Beam or Girders - Single or Spread
- Prestressed Concrete Continuous
- Length
- 210 ft
- 2 main spans
- Daily traffic
- 66,000
- 2016 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 99 over State Route 120 is a prestressed concrete continuous box beam or girders - single or spread carrying State Route 99 over State Route 120 in San Joaquin County, California. It was built in 2007, so it is 18 years old, younger 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 66,000 vehicles a day, roughly 15% of them trucks, projected to reach 113,150 by 2046. The structure is 210 ft (64 m) long and 110 ft wide. If it were closed, the detour would be 0.6 mi (1 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 | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 99 over State Route 120 built?
It was built in 2007, making it 18 years old in 2025.
What condition is State Route 99 over State Route 120 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 October 2024.
How much traffic does State Route 99 over State Route 120 carry?
About 66,000 vehicles per day (2016 count), of which roughly 15% are trucks.
How long is State Route 99 over State Route 120?
The structure is 210 ft (64 m) long with a longest span of 104 ft (31.6 m) and a deck 110 ft wide.
Who owns State Route 99 over State Route 120?
It is owned by the State Highway Agency.