Laguna Canyon Road over I 405
GoodOrange County, California · 12-ORA-405-2.20-IRVN · Structure no. 55 0247
- Built
- 1968
- 57 years old
- Condition
- Good
- inspected January 2025
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 427 ft
- 4 main spans
- Daily traffic
- 10,000
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
Laguna Canyon Road over I 405 is a prestressed concrete continuous box beam or girders - multiple carrying Laguna Canyon Road over I 405 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 10,000 vehicles a day, roughly 3% of them trucks, projected to reach 12,075 by 2045. The structure is 427 ft (130.1 m) long and 37 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 Laguna Canyon Road over I 405 built?
It was built in 1968, making it 57 years old in 2025.
What condition is Laguna Canyon Road over I 405 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 Laguna Canyon Road over I 405 carry?
About 10,000 vehicles per day (2015 count), of which roughly 3% are trucks.
How long is Laguna Canyon Road over I 405?
The structure is 427 ft (130.1 m) long with a longest span of 150 ft (45.7 m) and a deck 37 ft wide.
Who owns Laguna Canyon Road over I 405?
It is owned by the State Highway Agency.