SB39/SB405 On-Ramp over Route 405
GoodOrange County, California · 12-ORA-405-16.52-HNTB · Structure no. 55 1133F
- Built
- 2024
- 1 years old
- Condition
- Good
- inspected April 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 222 ft
- 2 main spans
- Daily traffic
- 9,000
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SB39/SB405 On-Ramp over Route 405 is a prestressed concrete continuous box beam or girders - multiple carrying SB39/SB405 On-Ramp over Route 405 in Orange County, California. It was built in 2024, so it is 1 years old, younger 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 9,000 vehicles a day, roughly 1% of them trucks, projected to reach 12,120 by 2044. The structure is 222 ft (67.8 m) long and 39 ft wide. If it were closed, the detour would be 0.6 mi (1 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 SB39/SB405 On-Ramp over Route 405 built?
It was built in 2024, making it 1 years old in 2025.
What condition is SB39/SB405 On-Ramp over Route 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 SB39/SB405 On-Ramp over Route 405 carry?
About 9,000 vehicles per day (2024 count), of which roughly 1% are trucks.
How long is SB39/SB405 On-Ramp over Route 405?
The structure is 222 ft (67.8 m) long with a longest span of 111 ft (33.9 m) and a deck 39 ft wide.
Who owns SB39/SB405 On-Ramp over Route 405?
It is owned by the State Highway Agency.