State Route 91 over Carbon Cyn Diversion Cha
GoodOrange County, California · 12-ORA-091-7.27-ANA · Structure no. 55 0396
- Built
- 1961
- 64 years old, rebuilt 1969
- Condition
- Good
- inspected September 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 58 ft
- 1 main span
- Daily traffic
- 225,000
- 2014 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 91 over Carbon Cyn Diversion Cha is a prestressed concrete box beam or girders - multiple carrying State Route 91 over Carbon Cyn Diversion Cha in Orange County, California. It was built in 1961 and reconstructed in 1969, so it is 64 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 225,000 vehicles a day, roughly 8% of them trucks, projected to reach 303,000 by 2040. The structure is 58 ft (17.7 m) long and 166 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 State Route 91 over Carbon Cyn Diversion Cha built?
It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1969.
What condition is State Route 91 over Carbon Cyn Diversion Cha 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 State Route 91 over Carbon Cyn Diversion Cha carry?
About 225,000 vehicles per day (2014 count), of which roughly 8% are trucks.
How long is State Route 91 over Carbon Cyn Diversion Cha?
The structure is 58 ft (17.7 m) long with a longest span of 58 ft (17.7 m) and a deck 166 ft wide.
Who owns State Route 91 over Carbon Cyn Diversion Cha?
It is owned by the State Highway Agency.