S405-N605 Conn over RTE 405 605 Conn Riv
FairOrange County, California · 12-ORA-405-24.11-SLB · Structure no. 55 0413F
- Built
- 1966
- 59 years old
- Condition
- Fair
- inspected September 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 1,796 ft
- 17 main spans
- Daily traffic
- 22,800
- 2014 count
- Owner
- State
- State Highway Agency
About this bridge
S405-N605 Conn over RTE 405 605 Conn Riv is a concrete continuous box beam or girders - multiple carrying S405-N605 Conn over RTE 405 605 Conn Riv 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 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 22,800 vehicles a day, roughly 3% of them trucks, projected to reach 24,022 by 2040. The structure is 1,796 ft (547.4 m) long and 34 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 7 Good | Some minor problems. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S405-N605 Conn over RTE 405 605 Conn Riv built?
It was built in 1966, making it 59 years old in 2025.
What condition is S405-N605 Conn over RTE 405 605 Conn Riv 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 September 2023.
How much traffic does S405-N605 Conn over RTE 405 605 Conn Riv carry?
About 22,800 vehicles per day (2014 count), of which roughly 3% are trucks.
How long is S405-N605 Conn over RTE 405 605 Conn Riv?
The structure is 1,796 ft (547.4 m) long with a longest span of 123 ft (37.5 m) and a deck 34 ft wide.
Who owns S405-N605 Conn over RTE 405 605 Conn Riv?
It is owned by the State Highway Agency.