SR 77 over Zapata Wash
Fair Condition65 years old2,421 vehicles/day
Location
| State | Arizona |
| County | Pinal |
| Location | 15.6 Mi S Jct SR 177 |
| Carries | SR 77 |
| Crosses | Zapata Wash |
| Coordinates | 32.78690, -110.67010 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 3 — Scour critical |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 166.0 ft (50.6 m) |
| Max Span | 35.1 ft (10.7 m) |
| Deck Width | 35.1 ft (10.7 m) |
| Deck Area | 541.4 sq m |
| Main Spans | 5 |
| Year Built | 1961 |
Traffic
| Avg Daily Traffic | 2,421 (2025) |
| Truck Traffic | 17% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 125 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 00634 |