State Route 99 SB over 7th Street & UP RR
PoorStanislaus County, California · 10-STA-099-R14.03 · Structure no. 38 0076L
- Built
- 1963
- 62 years old
- Condition
- Poor
- inspected March 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 334 ft
- 4 main spans
- Daily traffic
- 52,500
- 2011 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 99 SB over 7th Street & UP RR is a concrete continuous box beam or girders - multiple carrying State Route 99 SB over 7th Street & UP RR in Stanislaus County, California. It was built in 1963, 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 52,500 vehicles a day, roughly 12% of them trucks, projected to reach 66,358 by 2045. The structure is 334 ft (101.8 m) long and 52 ft wide. If it were closed, the detour would be 6.2 mi (10 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 99 SB over 7th Street & UP RR built?
It was built in 1963, making it 62 years old in 2025.
What condition is State Route 99 SB over 7th Street & UP RR in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2023.
How much traffic does State Route 99 SB over 7th Street & UP RR carry?
About 52,500 vehicles per day (2011 count), of which roughly 12% are trucks.
How long is State Route 99 SB over 7th Street & UP RR?
The structure is 334 ft (101.8 m) long with a longest span of 109 ft (33.2 m) and a deck 52 ft wide.
Who owns State Route 99 SB over 7th Street & UP RR?
It is owned by the State Highway Agency.