Interstate 405 over Constitution Ave
GoodLos Angeles County, California · 07-LA-405-31.90 · Structure no. 53 0711
- Built
- 1957
- 68 years old, rebuilt 2014
- Condition
- Good
- inspected May 2023
- Type
- Slab
- Concrete
- Length
- 43 ft
- 1 main span
- Daily traffic
- 283,000
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 405 over Constitution Ave is a concrete slab carrying Interstate 405 over Constitution Ave in Los Angeles County, California. It was built in 1957 and reconstructed in 2014, so it is 68 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 283,000 vehicles a day, roughly 4% of them trucks, projected to reach 432,259 by 2040. The structure is 43 ft (13.1 m) long and 213 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 Constitution Ave built?
It was built in 1957, making it 68 years old in 2025. It was reconstructed in 2014.
What condition is Interstate 405 over Constitution Ave 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 May 2023.
How much traffic does Interstate 405 over Constitution Ave carry?
About 283,000 vehicles per day (2019 count), of which roughly 4% are trucks.
How long is Interstate 405 over Constitution Ave?
The structure is 43 ft (13.1 m) long with a longest span of 42 ft (12.8 m) and a deck 213 ft wide.
Who owns Interstate 405 over Constitution Ave?
It is owned by the State Highway Agency.