Structure 4019 · Ionia County, MI
Carries Grand River Avenue over Lake Creek, 6.9mi W M66 On Gr Riv AVE.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 5 of 9.
How ratings work23 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 tee-beam bridge.
| State | Michigan |
| County | Ionia |
| Location | 6.9mi W M66 On Gr Riv AVE |
| Carries | Grand River Avenue |
| Crosses | Lake Creek |
| Coordinates | 42.88679, -85.20500 |
| Material | Concrete |
| Design | Tee Beam |
| Total Length | 23.0 ft (7 m) |
| Max Span | 20.0 ft (6.1 m) |
| Deck Width | 38.1 ft (11.6 m) |
| Deck Area | 81.2 sq m |
| Main Spans | 1 |
| Year Built | 1926 |
| Avg Daily Traffic | 1,196 (2007) |
| Truck Traffic | 18% |
| Lanes On Bridge | 2 |
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | Unknown |
| Structure Number | 000000000004019 |
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.