State Route 241 over Upper Oso Reservoir
FairOrange County, California · 12-ORA-241-20.40-MSNV · Structure no. 55 0703L
- Built
- 1995
- 30 years old
- Condition
- Fair
- inspected November 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 1,539 ft
- 6 main spans
- Daily traffic
- 21,000
- 2014 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 241 over Upper Oso Reservoir is a prestressed concrete continuous box beam or girders - multiple carrying State Route 241 over Upper Oso Reservoir in Orange County, California. It was built in 1995, so it is 30 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 21,000 vehicles a day, roughly 1% of them trucks, projected to reach 51,008 by 2046. The structure is 1,539 ft (469.1 m) long and 43 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. |
| Channel and channel protection | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 241 over Upper Oso Reservoir built?
It was built in 1995, making it 30 years old in 2025.
What condition is State Route 241 over Upper Oso Reservoir 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 November 2024.
How much traffic does State Route 241 over Upper Oso Reservoir carry?
About 21,000 vehicles per day (2014 count), of which roughly 1% are trucks.
How long is State Route 241 over Upper Oso Reservoir?
The structure is 1,539 ft (469.1 m) long with a longest span of 276 ft (84.1 m) and a deck 43 ft wide.
Who owns State Route 241 over Upper Oso Reservoir?
It is owned by the State Highway Agency.