HARBOR-N405 On-Ra over Harbor Blvd
FairOrange County, California · 12-ORA-405-11.47-CMS · Structure no. 55 1026S
- Built
- 2003
- 22 years old
- Condition
- Fair
- inspected February 2025
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 230 ft
- 2 main spans
- Daily traffic
- 5,000
- 2014 count
- Owner
- State
- State Highway Agency
About this bridge
HARBOR-N405 On-Ra over Harbor Blvd is a prestressed concrete continuous box beam or girders - multiple carrying HARBOR-N405 On-Ra over Harbor Blvd in Orange County, California. It was built in 2003, so it is 22 years old, younger than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 5,000 vehicles a day, roughly 3% of them trucks, projected to reach 10,442 by 2045. The structure is 230 ft (70.1 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 HARBOR-N405 On-Ra over Harbor Blvd built?
It was built in 2003, making it 22 years old in 2025.
What condition is HARBOR-N405 On-Ra over Harbor Blvd in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2025.
How much traffic does HARBOR-N405 On-Ra over Harbor Blvd carry?
About 5,000 vehicles per day (2014 count), of which roughly 3% are trucks.
How long is HARBOR-N405 On-Ra over Harbor Blvd?
The structure is 230 ft (70.1 m) long with a longest span of 115 ft (35 m) and a deck 38 ft wide.
Who owns HARBOR-N405 On-Ra over Harbor Blvd?
It is owned by the State Highway Agency.