SB Route 99 Onramp over SB Route 99 Offramp
GoodStanislaus County, California · 10-STA-099-R21.76-MOD · Structure no. 38 0162K
- Built
- 2016
- 9 years old
- Condition
- Good
- inspected March 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 220 ft
- 2 main spans
- Daily traffic
- 20,000
- 2016 count
- Owner
- State
- State Highway Agency
About this bridge
SB Route 99 Onramp over SB Route 99 Offramp is a prestressed concrete continuous box beam or girders - multiple carrying SB Route 99 Onramp over SB Route 99 Offramp in Stanislaus County, California. It was built in 2016, so it is 9 years old, younger than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 20,000 vehicles a day, roughly 10% of them trucks, projected to reach 30,707 by 2041. The structure is 220 ft (67.1 m) long and 55 ft wide. If it were closed, the detour would be 2.5 mi (4 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| 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 SB Route 99 Onramp over SB Route 99 Offramp built?
It was built in 2016, making it 9 years old in 2025.
What condition is SB Route 99 Onramp over SB Route 99 Offramp in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.
How much traffic does SB Route 99 Onramp over SB Route 99 Offramp carry?
About 20,000 vehicles per day (2016 count), of which roughly 10% are trucks.
How long is SB Route 99 Onramp over SB Route 99 Offramp?
The structure is 220 ft (67.1 m) long with a longest span of 111 ft (33.7 m) and a deck 55 ft wide.
Who owns SB Route 99 Onramp over SB Route 99 Offramp?
It is owned by the State Highway Agency.