Interstate 405 over Service Road
GoodOrange County, California · 12-ORA-405-12.40-CMS · Structure no. 55 0259
- Built
- 1966
- 59 years old, rebuilt 2001
- Condition
- Good
- inspected August 2023
- Type
- Slab
- Concrete
- Length
- 21 ft
- 1 main span
- Daily traffic
- 300,000
- 2014 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 405 over Service Road is a concrete slab carrying Interstate 405 over Service Road in Orange County, California. It was built in 1966 and reconstructed in 2001, 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 300,000 vehicles a day, roughly 6% of them trucks, projected to reach 432,000 by 2040. The structure is 21 ft (6.4 m) long and 202 ft wide. If it were closed, the detour would be 2.5 mi (4 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 Interstate 405 over Service Road built?
It was built in 1966, making it 59 years old in 2025. It was reconstructed in 2001.
What condition is Interstate 405 over Service Road 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 Service Road carry?
About 300,000 vehicles per day (2014 count), of which roughly 6% are trucks.
How long is Interstate 405 over Service Road?
The structure is 21 ft (6.4 m) long with a longest span of 19 ft (5.8 m) and a deck 202 ft wide.
Who owns Interstate 405 over Service Road?
It is owned by the State Highway Agency.