Walnut Ave over State Route 55
FairOrange County, California · 12-ORA-055-14.16-ORA · Structure no. 55 0927
- Built
- 2002
- 23 years old
- Condition
- Fair
- inspected March 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 234 ft
- 2 main spans
- Daily traffic
- 6,000
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Walnut Ave over State Route 55 is a prestressed concrete continuous box beam or girders - multiple carrying Walnut Ave over State Route 55 in Orange County, California. It was built in 2002, so it is 23 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 6,000 vehicles a day, roughly 1% of them trucks, projected to reach 8,000 by 2042. The structure is 234 ft (71.2 m) long and 51 ft wide. If it were closed, the detour would be 2.5 mi (4 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 Walnut Ave over State Route 55 built?
It was built in 2002, making it 23 years old in 2025.
What condition is Walnut Ave over State Route 55 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 March 2024.
How much traffic does Walnut Ave over State Route 55 carry?
About 6,000 vehicles per day (2020 count), of which roughly 1% are trucks.
How long is Walnut Ave over State Route 55?
The structure is 234 ft (71.2 m) long with a longest span of 117 ft (35.6 m) and a deck 51 ft wide.
Who owns Walnut Ave over State Route 55?
It is owned by the State Highway Agency.