Upper Big T Cyn RD over Alder Crk Br
GoodLos Angeles County, California · 4.1MI E/O Angeles for HWY · Structure no. 53C1792
- Built
- 1983
- 42 years old
- Condition
- Good
- inspected May 2024
- Type
- Culvert
- Steel
- Length
- 39 ft
- 1 main span
- Daily traffic
- 140
- 2017 count
- Owner
- County
- County Highway Agency
About this bridge
Upper Big T Cyn RD over Alder Crk Br is a steel culvert carrying Upper Big T Cyn RD over Alder Crk Br in Los Angeles County, California. It was built in 1983, so it is 42 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 140 vehicles a day, projected to reach 140 by 2044. The structure is 39 ft (11.9 m) long and 28 ft wide. If it were closed, the detour would be 123.7 mi (199 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Upper Big T Cyn RD over Alder Crk Br built?
It was built in 1983, making it 42 years old in 2025.
What condition is Upper Big T Cyn RD over Alder Crk Br 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 May 2024.
How much traffic does Upper Big T Cyn RD over Alder Crk Br carry?
About 140 vehicles per day (2017 count).
How long is Upper Big T Cyn RD over Alder Crk Br?
The structure is 39 ft (11.9 m) long with a longest span of 39 ft (11.9 m) and a deck 28 ft wide.
Who owns Upper Big T Cyn RD over Alder Crk Br?
It is owned by the County Highway Agency.