M-91 over Flat River
Good Condition32 years old7,125 vehicles/day
Location
| State | Michigan |
| County | Montcalm |
| Location | 9.5 Mi N Of M-57 |
| Carries | M-91 |
| Crosses | Flat River |
| Coordinates | 43.30874, -85.24393 |
Condition Ratings
| Overall Condition | Good |
| Deck | 8 (Very Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 62.3 ft (19 m) |
| Max Span | 59.7 ft (18.2 m) |
| Deck Width | 47.6 ft (14.5 m) |
| Deck Area | 275.5 sq m |
| Main Spans | 1 |
| Year Built | 1994 (reconstructed 2022) |
Traffic
| Avg Daily Traffic | 7,125 (2022) |
| Truck Traffic | 1% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000007440 |