MANCHESTER-N405 on over N405-LA Cienega Off-Ramp
GoodLos Angeles County, California · 07-LA-405-23.32-ING · Structure no. 53 1484S
- Built
- 1963
- 62 years old
- Condition
- Good
- inspected January 2025
- Type
- Box Beam or Girders - Multiple
- Concrete
- Length
- 43 ft
- 1 main span
- Daily traffic
- 7,100
- 2014 count
- Owner
- State
- State Highway Agency
About this bridge
MANCHESTER-N405 on over N405-LA Cienega Off-Ramp is a concrete box beam or girders - multiple carrying MANCHESTER-N405 on over N405-LA Cienega Off-Ramp in Los Angeles County, California. It was built in 1963, so it is 62 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 7,100 vehicles a day, roughly 2% of them trucks, projected to reach 8,658 by 2043. The structure is 43 ft (13.1 m) long and 34 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 MANCHESTER-N405 on over N405-LA Cienega Off-Ramp built?
It was built in 1963, making it 62 years old in 2025.
What condition is MANCHESTER-N405 on over N405-LA Cienega Off-Ramp 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 MANCHESTER-N405 on over N405-LA Cienega Off-Ramp carry?
About 7,100 vehicles per day (2014 count), of which roughly 2% are trucks.
How long is MANCHESTER-N405 on over N405-LA Cienega Off-Ramp?
The structure is 43 ft (13.1 m) long with a longest span of 42 ft (12.8 m) and a deck 34 ft wide.
Who owns MANCHESTER-N405 on over N405-LA Cienega Off-Ramp?
It is owned by the State Highway Agency.