Structure 1448 · Cass County, MI
Carries Union Road over Union And State Line DR, 0.5 Mi S Of Union.
Set by its lowest-rated component: Deck and Superstructure at 6 of 9.
How ratings work24 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 box-beam bridge.
| State | Michigan |
| County | Cass |
| Location | 0.5 Mi S Of Union |
| Carries | Union Road |
| Crosses | Union And State Line DR |
| Coordinates | 41.77966, -85.86722 |
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 24.0 ft (7.3 m) |
| Max Span | 24.0 ft (7.3 m) |
| Deck Width | 27.9 ft (8.5 m) |
| Deck Area | 62.0 sq m |
| Main Spans | 1 |
| Year Built | 1983 |
| Avg Daily Traffic | 310 (2019) |
| 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 | 000000000001448 |
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.