Oso Parkway over Arroyo Trabuco
GoodOrange County, California · 0.6 MI E/O Felipe Road · Structure no. 55C0606
- Built
- 1991
- 34 years old
- Condition
- Good
- inspected April 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 665 ft
- 5 main spans
- Daily traffic
- 27,000
- 2019 count
- Owner
- County
- County Highway Agency
About this bridge
Oso Parkway over Arroyo Trabuco is a prestressed concrete continuous box beam or girders - multiple carrying Oso Parkway over Arroyo Trabuco in Orange County, California. It was built in 1991, so it is 34 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 27,000 vehicles a day, roughly 1% of them trucks, projected to reach 57,333 by 2043. The structure is 665 ft (202.7 m) long and 104 ft wide. If it were closed, the detour would be 6.8 mi (11 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. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Oso Parkway over Arroyo Trabuco built?
It was built in 1991, making it 34 years old in 2025.
What condition is Oso Parkway over Arroyo Trabuco 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 2023.
How much traffic does Oso Parkway over Arroyo Trabuco carry?
About 27,000 vehicles per day (2019 count), of which roughly 1% are trucks.
How long is Oso Parkway over Arroyo Trabuco?
The structure is 665 ft (202.7 m) long with a longest span of 150 ft (45.7 m) and a deck 104 ft wide.
Who owns Oso Parkway over Arroyo Trabuco?
It is owned by the County Highway Agency.