M-77 over Manistique River
Fair Condition72 years old1,490 vehicles/day
Location
| State | Michigan |
| County | Schoolcraft |
| Location | 9.1 Mi N Of Us-2 |
| Carries | M-77 |
| Crosses | Manistique River |
| Coordinates | 46.23196, -85.92887 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 179.1 ft (54.6 m) |
| Max Span | 59.4 ft (18.1 m) |
| Deck Width | 33.5 ft (10.2 m) |
| Deck Area | 556.9 sq m |
| Main Spans | 3 |
| Year Built | 1954 |
Traffic
| Avg Daily Traffic | 1,490 (2007) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 923 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000009684 |