M-57 over Flint River
Fair Condition100 years old9,126 vehicles/day
Location
| State | Michigan |
| County | Genesee |
| Location | 1.0 Mi E Of Montrose |
| Carries | M-57 |
| Crosses | Flint River |
| Coordinates | 43.17624, -83.87779 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 9 (Excellent) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 3 — Scour critical |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 351.4 ft (107.1 m) |
| Max Span | 69.9 ft (21.3 m) |
| Deck Width | 47.2 ft (14.4 m) |
| Deck Area | 1542.2 sq m |
| Main Spans | 5 |
| Year Built | 1926 (reconstructed 1992) |
Traffic
| Avg Daily Traffic | 9,126 (2020) |
| Truck Traffic | 5% |
| Lanes On 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 | 000000000002618 |