Structure 708 · Bay County, MI
Carries Mackinaw RD over Pinconning River, 0.2 Mi S Of Pinconning RD.
22 ft end to end. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a slab bridge.
| State | Michigan |
| County | Bay |
| Location | 0.2 Mi S Of Pinconning RD |
| Carries | Mackinaw RD |
| Crosses | Pinconning River |
| Coordinates | 43.85114, -83.98628 |
| Material | Concrete |
| Design | Slab |
| Total Length | 22.0 ft (6.7 m) |
| Max Span | 20.0 ft (6.1 m) |
| Deck Width | 28.2 ft (8.6 m) |
| Deck Area | 57.6 sq m |
| Main Spans | 1 |
| Year Built | 1925 |
| Avg Daily Traffic | 676 (2000) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
| Last Inspection | April 2024 |
| Inspection Frequency | Every 12 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | Unknown |
| Structure Number | 000000000000708 |
Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."
A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.