M-66 over Middle Branch River
Poor Condition87 years old3,158 vehicles/day
Location
| State | Michigan |
| County | Osceola |
| Location | 3.8 Mi N Of M-61 |
| Carries | M-66 |
| Crosses | Middle Branch River |
| Coordinates | 44.10158, -85.14746 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 5 (Fair) |
| Superstructure | 4 (Poor) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 3 — Scour critical |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 44.9 ft (13.7 m) |
| Max Span | 44.9 ft (13.7 m) |
| Deck Width | 50.2 ft (15.3 m) |
| Deck Area | 209.6 sq m |
| Main Spans | 1 |
| Year Built | 1939 |
Traffic
| Avg Daily Traffic | 3,158 (2007) |
| Truck Traffic | 7% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 924 |
| Inspection Frequency | Every 12 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000008594 |