M-64 over Mineral River
Fair Condition72 years old500 vehicles/day
Location
| State | Michigan |
| County | Ontonagon |
| Location | 4.6 Mi S Of M-107 |
| Carries | M-64 |
| Crosses | Mineral River |
| Coordinates | 46.76219, -89.57387 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 169.0 ft (51.5 m) |
| Max Span | 69.9 ft (21.3 m) |
| Deck Width | 35.4 ft (10.8 m) |
| Deck Area | 556.2 sq m |
| Main Spans | 3 |
| Year Built | 1954 |
Traffic
| Avg Daily Traffic | 500 (2022) |
| Truck Traffic | 6% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 824 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000008465 |