I-75 SB over Trowbridge RD
Fair Condition64 years old7,875 vehicles/day
Location
| State | Michigan |
| County | Cheboygan |
| Location | 2.5 Mi N Of Otsego Col |
| Carries | I-75 SB |
| Crosses | Trowbridge RD |
| Coordinates | 45.22981, -84.58766 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 9 (Excellent) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 250.7 ft (76.4 m) |
| Max Span | 66.9 ft (20.4 m) |
| Deck Width | 36.4 ft (11.1 m) |
| Deck Area | 848.0 sq m |
| Main Spans | 4 |
| Year Built | 1962 (reconstructed 2024) |
Traffic
| Avg Daily Traffic | 7,875 (2024) |
| Truck Traffic | 8% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 2 |
Inspection & Ownership
| Last Inspection | 524 |
| Inspection Frequency | Every 23 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000001523 |