M-28 over M Br Ontonagon River
Fair Condition97 years old2,303 vehicles/day
Location
| State | Michigan |
| County | Ontonagon |
| Location | 5.0 Mi W Of Houghton Col |
| Carries | M-28 |
| Crosses | M Br Ontonagon River |
| Coordinates | 46.47927, -89.09045 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 9 — Foundation above flood level |
Physical Characteristics
| Material | Steel |
| Design | Arch - Deck |
| Total Length | 192.9 ft (58.8 m) |
| Max Span | 149.9 ft (45.7 m) |
| Deck Width | 35.1 ft (10.7 m) |
| Deck Area | 629.2 sq m |
| Main Spans | 1 |
| Year Built | 1929 (reconstructed 1992) |
Traffic
| Avg Daily Traffic | 2,303 (2007) |
| Truck Traffic | 18% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 624 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is on the National Register of Historic Places |
| Structure Number | 000000000008491 |