State Route 55 over Macarthur Storm Channel
GoodOrange County, California · 12-ORA-055-R7.06-SA · Structure no. 55 0496
- Built
- 1966
- 59 years old
- Condition
- Good
- inspected February 2024
- Type
- Culvert
- Concrete
- Length
- 25 ft
- 2 main spans
- Daily traffic
- 222,000
- 2014 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 55 over Macarthur Storm Channel is a concrete culvert carrying State Route 55 over Macarthur Storm Channel in Orange County, California. It was built in 1966, so it is 59 years old, older 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 222,000 vehicles a day, roughly 2% of them trucks, projected to reach 339,821 by 2044. The structure is 25 ft (7.6 m) long. 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 |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 55 over Macarthur Storm Channel built?
It was built in 1966, making it 59 years old in 2025.
What condition is State Route 55 over Macarthur Storm Channel 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 February 2024.
How much traffic does State Route 55 over Macarthur Storm Channel carry?
About 222,000 vehicles per day (2014 count), of which roughly 2% are trucks.
How long is State Route 55 over Macarthur Storm Channel?
The structure is 25 ft (7.6 m) long with a longest span of 13 ft (4 m).
Who owns State Route 55 over Macarthur Storm Channel?
It is owned by the State Highway Agency.