Old M-107 over Big Iron River
Poor Condition88 years old831 vehicles/day
Location
| State | Michigan |
| County | Ontonagon |
| Location | @ M-64 |
| Carries | Old M-107 |
| Crosses | Big Iron River |
| Coordinates | 46.83026, -89.56981 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 5 (Fair) |
| Superstructure | 4 (Poor) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 140.1 ft (42.7 m) |
| Max Span | 69.9 ft (21.3 m) |
| Deck Width | 38.4 ft (11.7 m) |
| Deck Area | 499.6 sq m |
| Main Spans | 2 |
| Year Built | 1938 |
Traffic
| Avg Daily Traffic | 831 (2007) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 12 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000008510 |