State Route 55 over Macarthur Blvd
FairOrange County, California · 12-ORA-055-R6.99-SA · Structure no. 55 0410
- Built
- 1966
- 59 years old, rebuilt 1970
- Condition
- Fair
- inspected February 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 172 ft
- 4 main spans
- Daily traffic
- 222,000
- 2014 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 55 over Macarthur Blvd is a concrete continuous box beam or girders - multiple carrying State Route 55 over Macarthur Blvd in Orange County, California. It was built in 1966 and reconstructed in 1970, 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 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 222,000 vehicles a day, roughly 2% of them trucks, projected to reach 275,904 by 2044. The structure is 172 ft (52.4 m) long and 250 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 | 7 Good | Some minor problems. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 55 over Macarthur Blvd built?
It was built in 1966, making it 59 years old in 2025. It was reconstructed in 1970.
What condition is State Route 55 over Macarthur Blvd 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 February 2024.
How much traffic does State Route 55 over Macarthur Blvd carry?
About 222,000 vehicles per day (2014 count), of which roughly 2% are trucks.
How long is State Route 55 over Macarthur Blvd?
The structure is 172 ft (52.4 m) long with a longest span of 62 ft (18.9 m) and a deck 250 ft wide.
Who owns State Route 55 over Macarthur Blvd?
It is owned by the State Highway Agency.