Structure 12155 · Wayne County, MI
Carries Middle Belt Road over Blakely Drain, Huron S/pennsylvania.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 5 of 9.
How ratings work25 ft end to end, longest span 12 ft. 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 | Wayne |
| Location | Huron S/pennsylvania |
| Carries | Middle Belt Road |
| Crosses | Blakely Drain |
| Coordinates | 42.17842, -83.32541 |
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 24.9 ft (7.6 m) |
| Max Span | 11.8 ft (3.6 m) |
| Deck Width | 35.4 ft (10.8 m) |
| Deck Area | 82.1 sq m |
| Main Spans | 2 |
| Year Built | 1922 (reconstructed 1972) |
| Avg Daily Traffic | 6,668 (1996) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
| Last Inspection | September 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 000000000012155 |
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.