Route 57 over Tonner Canyon RD
FairOrange County, California · 12-ORA-057-21.78 · Structure no. 55 0504
- Built
- 1971
- 54 years old
- Condition
- Fair
- inspected June 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 488 ft
- 5 main spans
- Daily traffic
- 210,000
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Route 57 over Tonner Canyon RD is a concrete continuous box beam or girders - multiple carrying Route 57 over Tonner Canyon RD in Orange County, California. It was built in 1971, so it is 54 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 210,000 vehicles a day, roughly 10% of them trucks, projected to reach 263,000 by 2041. The structure is 488 ft (148.7 m) long and 140 ft wide. If it were closed, the detour would be 1.9 mi (3 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 Route 57 over Tonner Canyon RD built?
It was built in 1971, making it 54 years old in 2025.
What condition is Route 57 over Tonner Canyon RD 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 June 2024.
How much traffic does Route 57 over Tonner Canyon RD carry?
About 210,000 vehicles per day (2020 count), of which roughly 10% are trucks.
How long is Route 57 over Tonner Canyon RD?
The structure is 488 ft (148.7 m) long with a longest span of 121 ft (36.9 m) and a deck 140 ft wide.
Who owns Route 57 over Tonner Canyon RD?
It is owned by the State Highway Agency.