Bay RD over I-75 SB
Fair Condition63 years old75 vehicles/day
Location
| State | Michigan |
| County | Mackinac |
| Location | 1.7 Mi S Of Chippewa Col |
| Carries | Bay RD |
| Crosses | I-75 SB |
| Coordinates | 46.14034, -84.58183 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 159.8 ft (48.7 m) |
| Max Span | 70.2 ft (21.4 m) |
| Deck Width | 31.5 ft (9.6 m) |
| Deck Area | 467.5 sq m |
| Main Spans | 3 |
| Year Built | 1963 |
Traffic
| Avg Daily Traffic | 75 (2011) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 2 |
Inspection & Ownership
| Last Inspection | 823 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000005960 |