Structure 13267 · Cass County, MI
Carries Calvin Center Road over Christiana Creek, 0.25mi N Of Williamsville.
A culvert 24 ft across with 3 openings. 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, so those are drawn as typical for a culvert.
| State | Michigan |
| County | Cass |
| Location | 0.25mi N Of Williamsville |
| Carries | Calvin Center Road |
| Crosses | Christiana Creek |
| Coordinates | 41.87501, -85.93356 |
| Material | Steel |
| Design | Culvert |
| Total Length | 24.3 ft (7.4 m) |
| Max Span | 6.9 ft (2.1 m) |
| Deck Area | 67.3 sq m |
| Main Spans | 3 |
| Year Built | 1998 |
| Avg Daily Traffic | 2,276 (2009) |
| Lanes On Bridge | 2 |
| Last Inspection | October 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 | 000000000013267 |
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.