State Route 99 over 9th Street & UP RR
FairStanislaus County, California · 10-STA-099-R17.93-MOD · Structure no. 38 0083
- Built
- 1963
- 62 years old, rebuilt 1976
- Condition
- Fair
- inspected March 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 415 ft
- 6 main spans
- Daily traffic
- 121,000
- 2011 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 99 over 9th Street & UP RR is a concrete continuous box beam or girders - multiple carrying State Route 99 over 9th Street & UP RR in Stanislaus County, California. It was built in 1963 and reconstructed in 1976, so it is 62 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 121,000 vehicles a day, roughly 14% of them trucks, projected to reach 201,729 by 2045. The structure is 415 ft (126.6 m) long and 113 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 99 over 9th Street & UP RR built?
It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1976.
What condition is State Route 99 over 9th Street & UP RR 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 March 2023.
How much traffic does State Route 99 over 9th Street & UP RR carry?
About 121,000 vehicles per day (2011 count), of which roughly 14% are trucks.
How long is State Route 99 over 9th Street & UP RR?
The structure is 415 ft (126.6 m) long with a longest span of 76 ft (23.2 m) and a deck 113 ft wide.
Who owns State Route 99 over 9th Street & UP RR?
It is owned by the State Highway Agency.