Interstate 405 over Atherton Street
GoodLos Angeles County, California · 07-LA-405-0.27-LBCH · Structure no. 53 1186
- Built
- 1964
- 61 years old, rebuilt 1992
- Condition
- Good
- inspected December 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 199 ft
- 3 main spans
- Daily traffic
- 255,000
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 405 over Atherton Street is a concrete continuous box beam or girders - multiple carrying Interstate 405 over Atherton Street in Los Angeles County, California. It was built in 1964 and reconstructed in 1992, 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 255,000 vehicles a day, roughly 5% of them trucks, projected to reach 316,127 by 2041. The structure is 199 ft (60.7 m) long and 168 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 Interstate 405 over Atherton Street built?
It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1992.
What condition is Interstate 405 over Atherton Street 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 December 2024.
How much traffic does Interstate 405 over Atherton Street carry?
About 255,000 vehicles per day (2021 count), of which roughly 5% are trucks.
How long is Interstate 405 over Atherton Street?
The structure is 199 ft (60.7 m) long with a longest span of 101 ft (30.8 m) and a deck 168 ft wide.
Who owns Interstate 405 over Atherton Street?
It is owned by the State Highway Agency.