SR 77 over Washboard Wash
Fair Condition88 years old3,684 vehicles/day
Location
| State | Arizona |
| County | Navajo |
| Location | 18.3 Mi N Jct SR 277 |
| Carries | SR 77 |
| Crosses | Washboard Wash |
| Coordinates | 34.77180, -110.12777 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 101.0 ft (30.8 m) |
| Max Span | 24.9 ft (7.6 m) |
| Deck Width | 30.8 ft (9.4 m) |
| Deck Area | 289.5 sq m |
| Main Spans | 4 |
| Year Built | 1938 |
Traffic
| Avg Daily Traffic | 3,684 (2021) |
| Truck Traffic | 18% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 623 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 00198 |