M-48 over I-75 NB
Fair Condition63 years old1,175 vehicles/day
Location
| State | Michigan |
| County | Chippewa |
| Location | 5.0 Mi N Of Mackinac Col |
| Carries | M-48 |
| Crosses | I-75 NB |
| Coordinates | 46.23054, -84.56095 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| 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 | 30.8 ft (9.4 m) |
| Deck Area | 1927.9 sq m |
| Main Spans | 12 |
| Year Built | 1963 |
Traffic
| Avg Daily Traffic | 1,175 (2007) |
| Truck Traffic | 9% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 4 |
Inspection & Ownership
| Last Inspection | 424 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000001577 |