SR 73 NB over Aliso Creek
GoodOrange County, California · 12-ORA-073-13.82-LGNG · Structure no. 55 0754R
- Built
- 1996
- 29 years old
- Condition
- Good
- inspected November 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 408 ft
- 2 main spans
- Daily traffic
- 25,000
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
SR 73 NB over Aliso Creek is a prestressed concrete continuous box beam or girders - multiple carrying SR 73 NB over Aliso Creek in Orange County, California. It was built in 1996, so it is 29 years old, younger 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 25,000 vehicles a day, roughly 8% of them trucks, projected to reach 26,400 by 2040. The structure is 408 ft (124.5 m) long and 84 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. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 73 NB over Aliso Creek built?
It was built in 1996, making it 29 years old in 2025.
What condition is SR 73 NB over Aliso Creek 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 November 2023.
How much traffic does SR 73 NB over Aliso Creek carry?
About 25,000 vehicles per day (2020 count), of which roughly 8% are trucks.
How long is SR 73 NB over Aliso Creek?
The structure is 408 ft (124.5 m) long with a longest span of 203 ft (61.8 m) and a deck 84 ft wide.
Who owns SR 73 NB over Aliso Creek?
It is owned by the State Highway Agency.