Structure 29366 · Spencer County, IN
Carries US 231 over Ohio River SR 66, 00.40 S Of SR 66.
Set by its lowest-rated component: Superstructure and Substructure at 6 of 9.
How ratings work4,510 ft end to end, longest span 1,200 ft: about 13 football fields. 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 cable-stayed bridge.
| State | Indiana |
| County | Spencer |
| Location | 00.40 S Of SR 66 |
| Carries | US 231 |
| Crosses | Ohio River SR 66 |
| Coordinates | 37.90377, -87.03635 |
| Material | Steel Continuous |
| Design | Stayed Girder |
| Total Length | 4509.5 ft (1374.5 m) |
| Max Span | 1199.8 ft (365.7 m) |
| Deck Width | 77.4 ft (23.6 m) |
| Deck Area | 32438.2 sq m |
| Main Spans | 3 |
| Year Built | 2002 |
| Avg Daily Traffic | 8,254 (2018) |
| Truck Traffic | 12% |
| Lanes On Bridge | 4 |
| Lanes Under Bridge | 2 |
| Last Inspection | August 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 029366 |
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.