Shinn RD over San Antonio Crk
GoodLos Angeles County, California · 0.2MI Ne/O Mnt Baldy RD · Structure no. 53C0971
- Built
- 1931
- 94 years old, rebuilt 1950
- Condition
- Good
- inspected October 2023
- Type
- Truss - Thru
- Wood or Timber
- Length
- 78 ft
- 2 main spans
- Daily traffic
- 1,475
- 2017 count
- Owner
- County
- County Highway Agency
About this bridge
Shinn RD over San Antonio Crk is a wood or timber truss - thru carrying Shinn RD over San Antonio Crk in Los Angeles County, California. It was built in 1931 and reconstructed in 1950, so it is 94 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 1,475 vehicles a day, roughly 2% of them trucks, projected to reach 1,623 by 2041. The structure is 78 ft (23.8 m) long and 26 ft wide. If it were closed, the detour would be 14.9 mi (24 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Shinn RD over San Antonio Crk built?
It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1950.
What condition is Shinn RD over San Antonio Crk 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 October 2023.
How much traffic does Shinn RD over San Antonio Crk carry?
About 1,475 vehicles per day (2017 count), of which roughly 2% are trucks.
How long is Shinn RD over San Antonio Crk?
The structure is 78 ft (23.8 m) long with a longest span of 38 ft (11.6 m) and a deck 26 ft wide.
Who owns Shinn RD over San Antonio Crk?
It is owned by the County Highway Agency.