Mariposa Road Oh over Austin Road & BNSF RY
FairSan Joaquin County, California · 1 Mile West of Kaiser RD · Structure no. 29C0414
- Built
- 2002
- 23 years old
- Condition
- Fair
- inspected January 2025
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 703 ft
- 5 main spans
- Daily traffic
- 6,397
- 2015 count
- Owner
- County
- County Highway Agency
About this bridge
Mariposa Road Oh over Austin Road & BNSF RY is a prestressed concrete continuous box beam or girders - multiple carrying Mariposa Road Oh over Austin Road & BNSF RY in San Joaquin County, California. It was built in 2002, so it is 23 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 6,397 vehicles a day, roughly 5% of them trucks, projected to reach 9,050 by 2045. The structure is 703 ft (214.3 m) long and 43 ft wide. If it were closed, the detour would be 11.2 mi (18 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mariposa Road Oh over Austin Road & BNSF RY built?
It was built in 2002, making it 23 years old in 2025.
What condition is Mariposa Road Oh over Austin Road & BNSF RY 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 January 2025.
How much traffic does Mariposa Road Oh over Austin Road & BNSF RY carry?
About 6,397 vehicles per day (2015 count), of which roughly 5% are trucks.
How long is Mariposa Road Oh over Austin Road & BNSF RY?
The structure is 703 ft (214.3 m) long with a longest span of 150 ft (45.7 m) and a deck 43 ft wide.
Who owns Mariposa Road Oh over Austin Road & BNSF RY?
It is owned by the County Highway Agency.