Mackinaw Road over Kawkawlin River
Poor Condition66 years old1,799 vehicles/day
Location
| State | Michigan |
| County | Bay |
| Location | 0.6 Mi N Of N Union RD |
| Carries | Mackinaw Road |
| Crosses | Kawkawlin River |
| Coordinates | 43.61851, -83.99205 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 4 (Poor) |
| Superstructure | 4 (Poor) |
| Substructure | 4 (Poor) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 134.8 ft (41.1 m) |
| Max Span | 44.9 ft (13.7 m) |
| Deck Width | 27.9 ft (8.5 m) |
| Deck Area | 349.4 sq m |
| Main Spans | 3 |
| Year Built | 1960 |
Traffic
| Avg Daily Traffic | 1,799 (2013) |
| Truck Traffic | 7% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 524 |
| Inspection Frequency | Every 12 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000000705 |