Mariposa RD over UP RR
GoodSan Bernardino County, California · 100 Ft S/E of Route 15 · Structure no. 54C0134
- Built
- 1967
- 58 years old
- Condition
- Good
- inspected January 2022
- Type
- Slab
- Concrete Continuous
- Length
- 124 ft
- 5 main spans
- Daily traffic
- 2,864
- 2014 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Mariposa RD over UP RR is a concrete continuous slab carrying Mariposa RD over UP RR in San Bernardino County, California. It was built in 1967, so it is 58 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 2,864 vehicles a day, roughly 5% of them trucks, projected to reach 2,261 by 2044. The structure is 124 ft (37.8 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 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 Mariposa RD over UP RR built?
It was built in 1967, making it 58 years old in 2025.
What condition is Mariposa RD over UP RR 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 2022.
How much traffic does Mariposa RD over UP RR carry?
About 2,864 vehicles per day (2014 count), of which roughly 5% are trucks.
How long is Mariposa RD over UP RR?
The structure is 124 ft (37.8 m) long with a longest span of 31 ft (9.4 m) and a deck 42 ft wide.
Who owns Mariposa RD over UP RR?
It is owned by the City or Municipal Highway Agency.