Interstate 405 over San Diego Creek Channel
GoodOrange County, California · 12-ORA-405-1.50-IRVN · Structure no. 55 0451
- Built
- 1968
- 57 years old, rebuilt 1990
- Condition
- Good
- inspected January 2025
- Type
- Girder and Floorbeam System
- Concrete Continuous
- Length
- 123 ft
- 2 main spans
- Daily traffic
- 205,000
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 405 over San Diego Creek Channel is a concrete continuous girder and floorbeam system carrying Interstate 405 over San Diego Creek Channel in Orange County, California. It was built in 1968 and reconstructed in 1990, so it is 57 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 205,000 vehicles a day, roughly 5% of them trucks, projected to reach 234,397 by 2045. The structure is 123 ft (37.4 m) long and 237 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. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 405 over San Diego Creek Channel built?
It was built in 1968, making it 57 years old in 2025. It was reconstructed in 1990.
What condition is Interstate 405 over San Diego Creek 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 January 2025.
How much traffic does Interstate 405 over San Diego Creek Channel carry?
About 205,000 vehicles per day (2015 count), of which roughly 5% are trucks.
How long is Interstate 405 over San Diego Creek Channel?
The structure is 123 ft (37.4 m) long with a longest span of 60 ft (18.3 m) and a deck 237 ft wide.
Who owns Interstate 405 over San Diego Creek Channel?
It is owned by the State Highway Agency.