Walnut Avenue over Route 405
GoodLos Angeles County, California · 07-LA-405-5.14-LBCH · Structure no. 53 1201
- Built
- 1964
- 61 years old
- Condition
- Good
- inspected January 2025
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 328 ft
- 4 main spans
- Daily traffic
- 2,100
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Walnut Avenue over Route 405 is a concrete continuous box beam or girders - multiple carrying Walnut Avenue over Route 405 in Los Angeles County, California. It was built in 1964, so it is 61 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 2,100 vehicles a day, roughly 6% of them trucks, projected to reach 2,627 by 2042. The structure is 328 ft (100 m) long and 70 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 Walnut Avenue over Route 405 built?
It was built in 1964, making it 61 years old in 2025.
What condition is Walnut Avenue over Route 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 Walnut Avenue over Route 405 carry?
About 2,100 vehicles per day (2020 count), of which roughly 6% are trucks.
How long is Walnut Avenue over Route 405?
The structure is 328 ft (100 m) long with a longest span of 95 ft (29 m) and a deck 70 ft wide.
Who owns Walnut Avenue over Route 405?
It is owned by the State Highway Agency.