Oso Parkway over BNSF RY AMTRAK Metrolink
FairOrange County, California · 0.1 MI West of Route I-5 · Structure no. 55C0056
- Built
- 1971
- 54 years old, rebuilt 2012
- Condition
- Fair
- inspected June 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 238 ft
- 2 main spans
- Daily traffic
- 40,800
- 2019 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Oso Parkway over BNSF RY AMTRAK Metrolink is a prestressed concrete continuous box beam or girders - multiple carrying Oso Parkway over BNSF RY AMTRAK Metrolink in Orange County, California. It was built in 1971 and reconstructed in 2012, 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 fair condition with a lowest component rating of 6 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 40,800 vehicles a day, roughly 1% of them trucks, projected to reach 89,172 by 2046. The structure is 238 ft (72.5 m) long and 149 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Oso Parkway over BNSF RY AMTRAK Metrolink built?
It was built in 1971, making it 54 years old in 2025. It was reconstructed in 2012.
What condition is Oso Parkway over BNSF RY AMTRAK Metrolink 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 June 2024.
How much traffic does Oso Parkway over BNSF RY AMTRAK Metrolink carry?
About 40,800 vehicles per day (2019 count), of which roughly 1% are trucks.
How long is Oso Parkway over BNSF RY AMTRAK Metrolink?
The structure is 238 ft (72.5 m) long with a longest span of 124 ft (37.8 m) and a deck 149 ft wide.
Who owns Oso Parkway over BNSF RY AMTRAK Metrolink?
It is owned by the City or Municipal Highway Agency.