Bison Avenue over Bonita Creek
FairOrange County, California · 0.1 MI W/O RTE 73 Fwy. · Structure no. 55C0639
- Built
- 1995
- 30 years old
- Condition
- Fair
- inspected August 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 334 ft
- 3 main spans
- Daily traffic
- 7,000
- 2020 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Bison Avenue over Bonita Creek is a prestressed concrete continuous box beam or girders - multiple carrying Bison Avenue over Bonita Creek in Orange County, California. It was built in 1995, so it is 30 years old, younger than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 7,000 vehicles a day, roughly 1% of them trucks, projected to reach 14,864 by 2045. The structure is 334 ft (101.9 m) long and 146 ft wide. If it were closed, the detour would be 3.1 mi (5 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Bison Avenue over Bonita Creek built?
It was built in 1995, making it 30 years old in 2025.
What condition is Bison Avenue over Bonita Creek in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.
How much traffic does Bison Avenue over Bonita Creek carry?
About 7,000 vehicles per day (2020 count), of which roughly 1% are trucks.
How long is Bison Avenue over Bonita Creek?
The structure is 334 ft (101.9 m) long with a longest span of 133 ft (40.5 m) and a deck 146 ft wide.
Who owns Bison Avenue over Bonita Creek?
It is owned by the City or Municipal Highway Agency.