Interstate 405 over Laguna Channel
GoodOrange County, California · 12-ORA-405-2.03-IRVN · Structure no. 55 0520
- Built
- 1968
- 57 years old
- Condition
- Good
- inspected January 2025
- Type
- Culvert
- Concrete
- Length
- 29 ft
- 2 main spans
- Daily traffic
- 237,000
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 405 over Laguna Channel is a concrete culvert carrying Interstate 405 over Laguna Channel in Orange County, California. It was built in 1968, so it is 57 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 237,000 vehicles a day, roughly 5% of them trucks, projected to reach 276,363 by 2045. The structure is 29 ft (8.8 m) long and 271 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 |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 405 over Laguna Channel built?
It was built in 1968, making it 57 years old in 2025.
What condition is Interstate 405 over Laguna Channel 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 Interstate 405 over Laguna Channel carry?
About 237,000 vehicles per day (2015 count), of which roughly 5% are trucks.
How long is Interstate 405 over Laguna Channel?
The structure is 29 ft (8.8 m) long with a longest span of 14 ft (4.3 m) and a deck 271 ft wide.
Who owns Interstate 405 over Laguna Channel?
It is owned by the State Highway Agency.