M-32 over Thunder Bay River
Fair Condition99 years old4,572 vehicles/day
Location
| State | Michigan |
| County | Montmorency |
| Location | 2.8 Mi NE Of M-33 |
| Carries | M-32 |
| Crosses | Thunder Bay River |
| Coordinates | 45.00863, -83.97250 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 3 — Scour critical |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 100.1 ft (30.5 m) |
| Max Span | 47.9 ft (14.6 m) |
| Deck Width | 47.2 ft (14.4 m) |
| Deck Area | 439.2 sq m |
| Main Spans | 2 |
| Year Built | 1927 (reconstructed 1991) |
Traffic
| Avg Daily Traffic | 4,572 (2007) |
| Truck Traffic | 8% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 724 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is on the National Register of Historic Places |
| Structure Number | 000000000007541 |