Oso Parkway over Interstate 5
GoodOrange County, California · 12-ORA-005-15.22-MSNV · Structure no. 55 0509
- Built
- 1971
- 54 years old
- Condition
- Good
- inspected June 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 270 ft
- 2 main spans
- Daily traffic
- 15,000
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Oso Parkway over Interstate 5 is a prestressed concrete continuous box beam or girders - multiple carrying Oso Parkway over Interstate 5 in Orange County, California. It was built in 1971, so it is 54 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 15,000 vehicles a day, roughly 3% of them trucks, projected to reach 18,111 by 2046. The structure is 270 ft (82.3 m) long and 109 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 Oso Parkway over Interstate 5 built?
It was built in 1971, making it 54 years old in 2025.
What condition is Oso Parkway over Interstate 5 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 June 2024.
How much traffic does Oso Parkway over Interstate 5 carry?
About 15,000 vehicles per day (2024 count), of which roughly 3% are trucks.
How long is Oso Parkway over Interstate 5?
The structure is 270 ft (82.3 m) long with a longest span of 142 ft (43.3 m) and a deck 109 ft wide.
Who owns Oso Parkway over Interstate 5?
It is owned by the State Highway Agency.