Old Topanga Cyn RD over Red Rock Crk
PoorPosted for loadLos Angeles County, California · 1.9MI N/O Topanga Cyn Bl · Structure no. 53C0979
- Built
- 1936
- 89 years old, rebuilt 1960
- Condition
- Poor
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 28 ft
- 1 main span
- Daily traffic
- 2,712
- 2014 count
- Owner
- County
- County Highway Agency
About this bridge
Old Topanga Cyn RD over Red Rock Crk is a wood or timber stringer/multi-beam or girder carrying Old Topanga Cyn RD over Red Rock Crk in Los Angeles County, California. It was built in 1936 and reconstructed in 1960, so it is 89 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.
It carries about 2,712 vehicles a day, roughly 2% of them trucks, projected to reach 2,983 by 2044. The structure is 28 ft (8.5 m) long and 29 ft wide. If it were closed, the detour would be 9.9 mi (16 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Old Topanga Cyn RD over Red Rock Crk built?
It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1960.
What condition is Old Topanga Cyn RD over Red Rock Crk in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.
How much traffic does Old Topanga Cyn RD over Red Rock Crk carry?
About 2,712 vehicles per day (2014 count), of which roughly 2% are trucks.
How long is Old Topanga Cyn RD over Red Rock Crk?
The structure is 28 ft (8.5 m) long with a longest span of 25 ft (7.6 m) and a deck 29 ft wide.
Who owns Old Topanga Cyn RD over Red Rock Crk?
It is owned by the County Highway Agency.