IRR US 70 over Black Rock Wash
Fair Condition94 years old3,521 vehicles/day
Location
| State | Arizona |
| County | Graham |
| Location | 32.7 Mi W Jct US 191 |
| Carries | IRR US 70 |
| Crosses | Black Rock Wash |
| Coordinates | 33.03493, -109.96094 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Tee Beam |
| Total Length | 207.0 ft (63.1 m) |
| Max Span | 40.0 ft (12.2 m) |
| Deck Width | 45.9 ft (14 m) |
| Deck Area | 883.4 sq m |
| Main Spans | 4 |
| Year Built | 1932 (reconstructed 1959) |
Traffic
| Avg Daily Traffic | 3,521 (2022) |
| Truck Traffic | 28% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 823 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 00545 |