LA Cienega Blvd NB over Interstate 405
GoodLos Angeles County, California · 07-LA-405-23.64-ING · Structure no. 53 1249
- Built
- 1961
- 64 years old
- Condition
- Good
- inspected January 2025
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 530 ft
- 5 main spans
- Daily traffic
- 45,291
- 2014 count
- Owner
- State
- State Highway Agency
About this bridge
LA Cienega Blvd NB over Interstate 405 is a concrete continuous box beam or girders - multiple carrying LA Cienega Blvd NB over Interstate 405 in Los Angeles County, California. It was built in 1961, so it is 64 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 45,291 vehicles a day, roughly 2% of them trucks, projected to reach 69,940 by 2043. The structure is 530 ft (161.5 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 LA Cienega Blvd NB over Interstate 405 built?
It was built in 1961, making it 64 years old in 2025.
What condition is LA Cienega Blvd NB over Interstate 405 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 LA Cienega Blvd NB over Interstate 405 carry?
About 45,291 vehicles per day (2014 count), of which roughly 2% are trucks.
How long is LA Cienega Blvd NB over Interstate 405?
The structure is 530 ft (161.5 m) long with a longest span of 129 ft (39.3 m) and a deck 34 ft wide.
Who owns LA Cienega Blvd NB over Interstate 405?
It is owned by the State Highway Agency.