Old M-107 over Union River
Poor Condition50 years old831 vehicles/day
Location
| State | Michigan |
| County | Ontonagon |
| Location | 2.5 Mi W Of Silver City |
| Carries | Old M-107 |
| Crosses | Union River |
| Coordinates | 46.81834, -89.61927 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 4 (Poor) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 74.8 ft (22.8 m) |
| Max Span | 74.8 ft (22.8 m) |
| Deck Width | 42.3 ft (12.9 m) |
| Deck Area | 294.1 sq m |
| Main Spans | 1 |
| Year Built | 1976 |
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 | 000000000008508 |