M-91 over Flat River
Fair Condition32 years old11,433 vehicles/day
Location
| State | Michigan |
| County | Montcalm |
| Location | In Greenville |
| Carries | M-91 |
| Crosses | Flat River |
| Coordinates | 43.18336, -85.25310 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 7 — Countermeasures installed |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 175.9 ft (53.6 m) |
| Max Span | 58.7 ft (17.9 m) |
| Deck Width | 62.7 ft (19.1 m) |
| Deck Area | 1023.8 sq m |
| Main Spans | 3 |
| Year Built | 1994 |
Traffic
| Avg Daily Traffic | 11,433 (2007) |
| Truck Traffic | 1% |
| Lanes On Bridge | 4 |
Inspection & Ownership
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000007439 |