Interstate 405 over Western Avenue
FairLos Angeles County, California · 07-LA-405-14.40-LA · Structure no. 53 1172
- Built
- 1962
- 63 years old
- Condition
- Fair
- inspected May 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 174 ft
- 3 main spans
- Daily traffic
- 228,000
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 405 over Western Avenue is a concrete continuous box beam or girders - multiple carrying Interstate 405 over Western Avenue in Los Angeles County, California. It was built in 1962, so it is 63 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 228,000 vehicles a day, roughly 5% of them trucks, projected to reach 309,675 by 2046. The structure is 174 ft (53 m) long and 149 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 Interstate 405 over Western Avenue built?
It was built in 1962, making it 63 years old in 2025.
What condition is Interstate 405 over Western Avenue in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.
How much traffic does Interstate 405 over Western Avenue carry?
About 228,000 vehicles per day (2021 count), of which roughly 5% are trucks.
How long is Interstate 405 over Western Avenue?
The structure is 174 ft (53 m) long with a longest span of 102 ft (31.1 m) and a deck 149 ft wide.
Who owns Interstate 405 over Western Avenue?
It is owned by the State Highway Agency.