Bristol ST over Interstate 405
GoodOrange County, California · 12-ORA-405-9.51-CMS · Structure no. 55 0431
- Built
- 1966
- 59 years old, rebuilt 1996
- Condition
- Good
- inspected February 2025
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 314 ft
- 4 main spans
- Daily traffic
- 20,000
- 2014 count
- Owner
- State
- State Highway Agency
About this bridge
Bristol ST over Interstate 405 is a concrete continuous box beam or girders - multiple carrying Bristol ST over Interstate 405 in Orange County, California. It was built in 1966 and reconstructed in 1996, 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 20,000 vehicles a day, roughly 3% of them trucks, projected to reach 24,148 by 2045. The structure is 314 ft (95.7 m) long and 112 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Bristol ST over Interstate 405 built?
It was built in 1966, making it 59 years old in 2025. It was reconstructed in 1996.
What condition is Bristol ST over Interstate 405 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 February 2025.
How much traffic does Bristol ST over Interstate 405 carry?
About 20,000 vehicles per day (2014 count), of which roughly 3% are trucks.
How long is Bristol ST over Interstate 405?
The structure is 314 ft (95.7 m) long with a longest span of 108 ft (32.9 m) and a deck 112 ft wide.
Who owns Bristol ST over Interstate 405?
It is owned by the State Highway Agency.