M-28 over Au Train River
Fair Condition94 years old5,200 vehicles/day
Location
| State | Michigan |
| County | Alger |
| Location | E Limits Of Au Train |
| Carries | M-28 |
| Crosses | Au Train River |
| Coordinates | 46.43312, -86.83623 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 3 — Scour critical |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 149.9 ft (45.7 m) |
| Max Span | 49.2 ft (15 m) |
| Deck Width | 60.0 ft (18.3 m) |
| Deck Area | 836.3 sq m |
| Main Spans | 3 |
| Year Built | 1932 (reconstructed 1976) |
Traffic
| Avg Daily Traffic | 5,200 (2020) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 524 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000000047 |