Thisa Way over Silverado Canyon Creek
FairOrange County, California · 200 S/O Silverado Cyn RD · Structure no. 55C0188
- Built
- 1965
- 60 years old
- Condition
- Fair
- inspected April 2023
- Type
- Culvert
- Concrete
- Length
- 26 ft
- 1 main span
- Daily traffic
- 200
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
Thisa Way over Silverado Canyon Creek is a concrete culvert carrying Thisa Way over Silverado Canyon Creek in Orange County, California. It was built in 1965, so it is 60 years old, older 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 6 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 200 vehicles a day, roughly 1% of them trucks, projected to reach 210 by 2040. The structure is 26 ft (7.9 m) long and 24 ft wide. If it were closed, the detour would be 1.2 mi (2 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 |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Thisa Way over Silverado Canyon Creek built?
It was built in 1965, making it 60 years old in 2025.
What condition is Thisa Way over Silverado Canyon 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 April 2023.
How much traffic does Thisa Way over Silverado Canyon Creek carry?
About 200 vehicles per day (2021 count), of which roughly 1% are trucks.
How long is Thisa Way over Silverado Canyon Creek?
The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.3 m) and a deck 24 ft wide.
Who owns Thisa Way over Silverado Canyon Creek?
It is owned by the County Highway Agency.