Structure 4100087 · Johnson County, IN
Carries CR 350 South over Amity Ditch, 0.05 W Of US 31.
Set by its lowest-rated component: Deck and Superstructure at 4 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 channel-beam bridge.
| State | Indiana |
| County | Johnson |
| Location | 0.05 W Of US 31 |
| Carries | CR 350 South |
| Crosses | Amity Ditch |
| Coordinates | 39.42614, -86.00485 |
| Material | Concrete |
| Design | Channel Beam |
| Total Length | 23.6 ft (7.2 m) |
| Max Span | 21.3 ft (6.5 m) |
| Deck Width | 22.3 ft (6.8 m) |
| Deck Area | 49.0 sq m |
| Main Spans | 1 |
| Year Built | 1960 |
| Avg Daily Traffic | 65 (2017) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
| Last Inspection | June 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 | 4100087 |
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.