M-25 over Pinnebog River
Fair Condition50 years old1,500 vehicles/day
Location
| State | Michigan |
| County | Huron |
| Location | 6.0 Mi SW Of Port Austin |
| Carries | M-25 |
| Crosses | Pinnebog River |
| Coordinates | 43.99341, -83.07563 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 120.1 ft (36.6 m) |
| Max Span | 60.0 ft (18.3 m) |
| Deck Width | 51.8 ft (15.8 m) |
| Deck Area | 578.3 sq m |
| Main Spans | 2 |
| Year Built | 1976 |
Traffic
| Avg Daily Traffic | 1,500 (2011) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 723 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000003450 |