S405-N55 Connector over I 405 & N405-S55 Conn
GoodOrange County, California · 12-ORA-405-8.65-IRVN · Structure no. 55 0421F
- Built
- 1968
- 57 years old
- Condition
- Good
- inspected February 2025
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 433 ft
- 5 main spans
- Daily traffic
- 28,500
- 2014 count
- Owner
- State
- State Highway Agency
About this bridge
S405-N55 Connector over I 405 & N405-S55 Conn is a concrete continuous box beam or girders - multiple carrying S405-N55 Connector over I 405 & N405-S55 Conn 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 28,500 vehicles a day, roughly 5% of them trucks, projected to reach 34,411 by 2045. The structure is 433 ft (132 m) long and 40 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 S405-N55 Connector over I 405 & N405-S55 Conn built?
It was built in 1968, making it 57 years old in 2025.
What condition is S405-N55 Connector over I 405 & N405-S55 Conn 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 February 2025.
How much traffic does S405-N55 Connector over I 405 & N405-S55 Conn carry?
About 28,500 vehicles per day (2014 count), of which roughly 5% are trucks.
How long is S405-N55 Connector over I 405 & N405-S55 Conn?
The structure is 433 ft (132 m) long with a longest span of 100 ft (30.5 m) and a deck 40 ft wide.
Who owns S405-N55 Connector over I 405 & N405-S55 Conn?
It is owned by the State Highway Agency.