Interstate 405 over Los Angeles River
GoodLos Angeles County, California · 07-LA-405-39.62-LA · Structure no. 53 1159
- Built
- 1958
- 67 years old
- Condition
- Good
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 85 ft
- 1 main span
- Daily traffic
- 220,000
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 405 over Los Angeles River is a steel stringer/multi-beam or girder carrying Interstate 405 over Los Angeles River in Los Angeles County, California. It was built in 1958, so it is 67 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 220,000 vehicles a day, roughly 4% of them trucks, projected to reach 328,296 by 2040. The structure is 85 ft (25.8 m) long and 140 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. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 405 over Los Angeles River built?
It was built in 1958, making it 67 years old in 2025.
What condition is Interstate 405 over Los Angeles River 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 June 2023.
How much traffic does Interstate 405 over Los Angeles River carry?
About 220,000 vehicles per day (2019 count), of which roughly 4% are trucks.
How long is Interstate 405 over Los Angeles River?
The structure is 85 ft (25.8 m) long with a longest span of 85 ft (25.8 m) and a deck 140 ft wide.
Who owns Interstate 405 over Los Angeles River?
It is owned by the State Highway Agency.