Structure 4638484 · Logan County, OH
Carries CR 91 over Flat Branch, 1.21 M E Of Tr 46.
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 | Ohio |
| County | Logan |
| Location | 1.21 M E Of Tr 46 |
| Carries | CR 91 |
| Crosses | Flat Branch |
| Coordinates | 40.40007, -83.80514 |
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 24.0 ft (7.3 m) |
| Max Span | 23.0 ft (7 m) |
| Deck Width | 26.9 ft (8.2 m) |
| Deck Area | 59.9 sq m |
| Main Spans | 1 |
| Year Built | 1908 (reconstructed 1985) |
| Avg Daily Traffic | 567 (2015) |
| Truck Traffic | 8% |
| Lanes On Bridge | 2 |
| Last Inspection | December 2024 |
| Inspection Frequency | Every 12 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 4 — Foundations need monitoring |
| Structure Number | 4638484 |
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.