Structure 10231 · St. Clair County, MI
Carries Ravenswood Road over Smiths Creek, Sec 23-26 Wales Twp.
Set by its lowest-rated component: Deck and Substructure at 5 of 9.
How ratings work25 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 | St. Clair |
| Location | Sec 23-26 Wales Twp |
| Carries | Ravenswood Road |
| Crosses | Smiths Creek |
| Coordinates | 42.93148, -82.64267 |
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 24.9 ft (7.6 m) |
| Max Span | 20.3 ft (6.2 m) |
| Deck Width | 21.3 ft (6.5 m) |
| Deck Area | 49.4 sq m |
| Main Spans | 1 |
| Year Built | 1912 (reconstructed 1976) |
| Avg Daily Traffic | 105 (1994) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
| Last Inspection | November 2023 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 5 — Stable for scour |
| Structure Number | 000000000010231 |
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.