State Route 74 over San Juan Canyon
Fair Condition97 years old9,800 vehicles/day
Location
| State | California |
| County | Orange |
| Location | 12-ora-074-13.29-sjcp |
| Carries | State Route 74 |
| Crosses | San Juan Canyon |
| Coordinates | 33.59039, -117.50196 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 9 — Foundation above flood level |
Physical Characteristics
| Material | Concrete |
| Design | Arch - Deck |
| Total Length | 180.1 ft (54.9 m) |
| Max Span | 149.0 ft (45.4 m) |
| Deck Width | 25.3 ft (7.7 m) |
| Deck Area | 422.7 sq m |
| Main Spans | 1 |
| Year Built | 1929 |
Traffic
| Avg Daily Traffic | 9,800 (2014) |
| Truck Traffic | 7% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 823 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is eligible for the National Register |
| Structure Number | 55 0064 |