Riverdale Ave over State Route 91
GoodOrange County, California · 12-ORA-091-8.80-ANA · Structure no. 55 0427
- Built
- 1967
- 58 years old
- Condition
- Good
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 276 ft
- 2 main spans
- Daily traffic
- 10,000
- 2014 count
- Owner
- State
- State Highway Agency
About this bridge
Riverdale Ave over State Route 91 is a steel stringer/multi-beam or girder carrying Riverdale Ave over State Route 91 in Orange County, California. It was built in 1967, so it is 58 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 10,000 vehicles a day, roughly 2% of them trucks, projected to reach 11,222 by 2040. The structure is 276 ft (84.1 m) long and 47 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 Riverdale Ave over State Route 91 built?
It was built in 1967, making it 58 years old in 2025.
What condition is Riverdale Ave over State Route 91 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 September 2023.
How much traffic does Riverdale Ave over State Route 91 carry?
About 10,000 vehicles per day (2014 count), of which roughly 2% are trucks.
How long is Riverdale Ave over State Route 91?
The structure is 276 ft (84.1 m) long with a longest span of 135 ft (41.1 m) and a deck 47 ft wide.
Who owns Riverdale Ave over State Route 91?
It is owned by the State Highway Agency.