State Route 55 over Main Street
GoodOrange County, California · 12-ORA-055-R6.39-SA · Structure no. 55 0416
- Built
- 1966
- 59 years old, rebuilt 1970
- Condition
- Good
- inspected February 2022
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 178 ft
- 3 main spans
- Daily traffic
- 222,000
- 2014 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 55 over Main Street is a concrete continuous box beam or girders - multiple carrying State Route 55 over Main Street 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 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 275,904 by 2044. The structure is 178 ft (54.3 m) long and 278 ft wide. 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 55 over Main Street 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 Main Street 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 2022.
How much traffic does State Route 55 over Main Street carry?
About 222,000 vehicles per day (2014 count), of which roughly 2% are trucks.
How long is State Route 55 over Main Street?
The structure is 178 ft (54.3 m) long with a longest span of 99 ft (30.2 m) and a deck 278 ft wide.
Who owns State Route 55 over Main Street?
It is owned by the State Highway Agency.