M-28 over So Br Ontonagon River
Good Condition36 years old2,398 vehicles/day
Location
| State | Michigan |
| County | Ontonagon |
| Location | 4.7 Mi W Of Us-45 (ewen) |
| Carries | M-28 |
| Crosses | So Br Ontonagon River |
| Coordinates | 46.53473, -89.27625 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 309.1 ft (94.2 m) |
| Max Span | 104.0 ft (31.7 m) |
| Deck Width | 51.2 ft (15.6 m) |
| Deck Area | 1469.5 sq m |
| Main Spans | 3 |
| Year Built | 1990 |
Traffic
| Avg Daily Traffic | 2,398 (2007) |
| Truck Traffic | 11% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 823 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000008488 |