N73-N405 Connector over Interstate 405
GoodOrange County, California · 12-ORA-073-R27.76R-CMS · Structure no. 55 0434G
- Built
- 1968
- 57 years old
- Condition
- Good
- inspected April 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 520 ft
- 2 main spans
- Daily traffic
- 33,000
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
N73-N405 Connector over Interstate 405 is a prestressed concrete continuous box beam or girders - multiple carrying N73-N405 Connector over Interstate 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 33,000 vehicles a day, roughly 2% of them trucks, projected to reach 36,300 by 2042. The structure is 520 ft (158.5 m) long and 53 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 N73-N405 Connector over Interstate 405 built?
It was built in 1968, making it 57 years old in 2025.
What condition is N73-N405 Connector over Interstate 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 April 2024.
How much traffic does N73-N405 Connector over Interstate 405 carry?
About 33,000 vehicles per day (2020 count), of which roughly 2% are trucks.
How long is N73-N405 Connector over Interstate 405?
The structure is 520 ft (158.5 m) long with a longest span of 187 ft (57 m) and a deck 53 ft wide.
Who owns N73-N405 Connector over Interstate 405?
It is owned by the State Highway Agency.