Weir Canyon Road over Santa Ana River Channel
FairOrange County, California · 0.2 MI North of Fwy 91 · Structure no. 55C0509
- Built
- 1983
- 42 years old
- Condition
- Fair
- inspected April 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 775 ft
- 6 main spans
- Daily traffic
- 34,000
- 2020 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Weir Canyon Road over Santa Ana River Channel is a concrete continuous box beam or girders - multiple carrying Weir Canyon Road over Santa Ana River Channel in Orange County, California. It was built in 1983, so it is 42 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 34,000 vehicles a day, roughly 1% of them trucks, projected to reach 71,480 by 2040. The structure is 775 ft (236.2 m) long and 88 ft wide. If it were closed, the detour would be 5 mi (8 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. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Weir Canyon Road over Santa Ana River Channel built?
It was built in 1983, making it 42 years old in 2025.
What condition is Weir Canyon Road over Santa Ana River Channel 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 Weir Canyon Road over Santa Ana River Channel carry?
About 34,000 vehicles per day (2020 count), of which roughly 1% are trucks.
How long is Weir Canyon Road over Santa Ana River Channel?
The structure is 775 ft (236.2 m) long with a longest span of 132 ft (40.1 m) and a deck 88 ft wide.
Who owns Weir Canyon Road over Santa Ana River Channel?
It is owned by the City or Municipal Highway Agency.