M-48 over I-75 NB
Fair Condition64 years old605 vehicles/day
Location
| State | Michigan |
| County | Chippewa |
| Location | 2.0 Mi N Of Mackinac Col |
| Carries | M-48 |
| Crosses | I-75 NB |
| Coordinates | 46.18714, -84.56099 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 672.9 ft (205.1 m) |
| Max Span | 71.9 ft (21.9 m) |
| Deck Width | 35.1 ft (10.7 m) |
| Deck Area | 2194.6 sq m |
| Main Spans | 12 |
| Year Built | 1962 |
Traffic
| Avg Daily Traffic | 605 (2007) |
| Truck Traffic | 27% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 4 |
Inspection & Ownership
| Last Inspection | December 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000001576 |