Interstate 405 over Heil Ave Drain
GoodOrange County, California · 12-ORA-405-15.49-HNTB · Structure no. 55 0479
- Built
- 1966
- 59 years old
- Condition
- Good
- inspected August 2023
- Type
- Culvert
- Concrete
- Length
- 23 ft
- 3 main spans
- Daily traffic
- 263,000
- 2014 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 405 over Heil Ave Drain is a concrete culvert carrying Interstate 405 over Heil Ave Drain 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 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 263,000 vehicles a day, roughly 7% of them trucks, projected to reach 362,000 by 2040. The structure is 23 ft (7 m) long and 154 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 |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 405 over Heil Ave Drain built?
It was built in 1966, making it 59 years old in 2025.
What condition is Interstate 405 over Heil Ave Drain 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 August 2023.
How much traffic does Interstate 405 over Heil Ave Drain carry?
About 263,000 vehicles per day (2014 count), of which roughly 7% are trucks.
How long is Interstate 405 over Heil Ave Drain?
The structure is 23 ft (7 m) long with a longest span of 8 ft (2.4 m) and a deck 154 ft wide.
Who owns Interstate 405 over Heil Ave Drain?
It is owned by the State Highway Agency.