IRR BIA RTE N59 over Blackhorse Wash
Fair Condition57 years old1,189 vehicles/day
Location
| State | Arizona |
| County | Navajo |
| Location | 4mi North Of Chilchinbito |
| Carries | IRR BIA RTE N59 |
| Crosses | Blackhorse Wash |
| Coordinates | 36.57961, -110.06006 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 105.6 ft (32.2 m) |
| Max Span | 34.8 ft (10.6 m) |
| Deck Width | 30.8 ft (9.4 m) |
| Deck Area | 302.7 sq m |
| Main Spans | 3 |
| Year Built | 1969 |
Traffic
| Avg Daily Traffic | 1,189 (2023) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 323 |
| Inspection Frequency | Every 24 months |
| Owner | Bureau of Indian Affairs |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 00000000000N305 |