M-32 over S Br Thunder Bay River
Fair Condition95 years old5,505 vehicles/day
Location
| State | Michigan |
| County | Alpena |
| Location | 7.3 Mi W Of Alpena |
| Carries | M-32 |
| Crosses | S Br Thunder Bay River |
| Coordinates | 45.06089, -83.58514 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 180.1 ft (54.9 m) |
| Max Span | 58.7 ft (17.9 m) |
| Deck Width | 38.4 ft (11.7 m) |
| Deck Area | 642.3 sq m |
| Main Spans | 3 |
| Year Built | 1931 (reconstructed 1988) |
Traffic
| Avg Daily Traffic | 5,505 (2007) |
| Truck Traffic | 9% |
| 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 | 000000000000330 |