SR 77 over Mammoth Wash
Fair Condition70 years old3,653 vehicles/day
Location
| State | Arizona |
| County | Pinal |
| Location | 3.6 Mi N Jct Old SR 76 |
| Carries | SR 77 |
| Crosses | Mammoth Wash |
| Coordinates | 32.70050, -110.64390 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 3 — Scour critical |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 144.0 ft (43.9 m) |
| Max Span | 24.9 ft (7.6 m) |
| Deck Width | 44.9 ft (13.7 m) |
| Deck Area | 601.4 sq m |
| Main Spans | 6 |
| Year Built | 1956 |
Traffic
| Avg Daily Traffic | 3,653 (2022) |
| Truck Traffic | 15% |
| Lanes On Bridge | 3 |
Inspection & Ownership
| Last Inspection | 225 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 00493 |