M-32 over S Br Thunder Bay River
Good Condition94 years old4,144 vehicles/day
Location
| State | Michigan |
| County | Alpena |
| Location | 4.7 Mi E Montmorency Col |
| Carries | M-32 |
| Crosses | S Br Thunder Bay River |
| Coordinates | 45.05911, -83.78205 |
Condition Ratings
| Overall Condition | Good |
| Deck | 8 (Very Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 7 — Countermeasures installed |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 49.9 ft (15.2 m) |
| Max Span | 48.2 ft (14.7 m) |
| Deck Width | 42.3 ft (12.9 m) |
| Deck Area | 196.1 sq m |
| Main Spans | 1 |
| Year Built | 1932 (reconstructed 2009) |
Traffic
| Avg Daily Traffic | 4,144 (2006) |
| Truck Traffic | 1% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 724 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000000328 |