Route 55 over N405-S55 Connector
PoorOrange County, California · 12-ORA-055-R6.06-CMS · Structure no. 55 0424
- Built
- 1966
- 59 years old, rebuilt 1970
- Condition
- Poor
- inspected April 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 128 ft
- 3 main spans
- Daily traffic
- 167,000
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Route 55 over N405-S55 Connector is a concrete continuous box beam or girders - multiple carrying Route 55 over N405-S55 Connector 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 167,000 vehicles a day, roughly 2% of them trucks, projected to reach 265,104 by 2042. The structure is 128 ft (39 m) long and 126 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 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 Route 55 over N405-S55 Connector built?
It was built in 1966, making it 59 years old in 2025. It was reconstructed in 1970.
What condition is Route 55 over N405-S55 Connector in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2024.
How much traffic does Route 55 over N405-S55 Connector carry?
About 167,000 vehicles per day (2020 count), of which roughly 2% are trucks.
How long is Route 55 over N405-S55 Connector?
The structure is 128 ft (39 m) long with a longest span of 61 ft (18.6 m) and a deck 126 ft wide.
Who owns Route 55 over N405-S55 Connector?
It is owned by the State Highway Agency.