MACARTHUR-N73 Onra over SR 73 Ramps Bonita Crk
GoodOrange County, California · 12-ORA-073-23.75-IRVN · Structure no. 55 0735S
- Built
- 1996
- 29 years old
- Condition
- Good
- inspected May 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 804 ft
- 7 main spans
- Daily traffic
- 22,090
- 2014 count
- Owner
- State
- State Highway Agency
About this bridge
MACARTHUR-N73 Onra over SR 73 Ramps Bonita Crk is a prestressed concrete continuous box beam or girders - multiple carrying MACARTHUR-N73 Onra over SR 73 Ramps Bonita Crk 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 22,090 vehicles a day, roughly 1% of them trucks, projected to reach 24,300 by 2042. The structure is 804 ft (245 m) long and 39 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 MACARTHUR-N73 Onra over SR 73 Ramps Bonita Crk built?
It was built in 1996, making it 29 years old in 2025.
What condition is MACARTHUR-N73 Onra over SR 73 Ramps Bonita Crk 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 May 2024.
How much traffic does MACARTHUR-N73 Onra over SR 73 Ramps Bonita Crk carry?
About 22,090 vehicles per day (2014 count), of which roughly 1% are trucks.
How long is MACARTHUR-N73 Onra over SR 73 Ramps Bonita Crk?
The structure is 804 ft (245 m) long with a longest span of 131 ft (40 m) and a deck 39 ft wide.
Who owns MACARTHUR-N73 Onra over SR 73 Ramps Bonita Crk?
It is owned by the State Highway Agency.