Mariposa Road over Weber Creek
GoodSan Joaquin County, California · 0.8 MI W of Jack Tone RD · Structure no. 29C0174
- Built
- 1934
- 91 years old, rebuilt 1973
- Condition
- Good
- inspected January 2025
- Type
- Slab
- Concrete Continuous
- Length
- 30 ft
- 2 main spans
- Daily traffic
- 4,138
- 2018 count
- Owner
- County
- County Highway Agency
About this bridge
Mariposa Road over Weber Creek is a concrete continuous slab carrying Mariposa Road over Weber Creek in San Joaquin County, California. It was built in 1934 and reconstructed in 1973, so it is 91 years old, older 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 4,138 vehicles a day, roughly 5% of them trucks, projected to reach 5,471 by 2045. The structure is 30 ft (9.1 m) long and 41 ft wide. If it were closed, the detour would be 6.8 mi (11 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. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mariposa Road over Weber Creek built?
It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1973.
What condition is Mariposa Road over Weber Creek 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 January 2025.
How much traffic does Mariposa Road over Weber Creek carry?
About 4,138 vehicles per day (2018 count), of which roughly 5% are trucks.
How long is Mariposa Road over Weber Creek?
The structure is 30 ft (9.1 m) long with a longest span of 14 ft (4.4 m) and a deck 41 ft wide.
Who owns Mariposa Road over Weber Creek?
It is owned by the County Highway Agency.