Structure 4900437 · Marion County, IN
Carries Derbyshire Road over Derbyshire Creek, 00.40 NE Of Southport RD.
24 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 deck arch.
| State | Indiana |
| County | Marion |
| Location | 00.40 NE Of Southport RD |
| Carries | Derbyshire Road |
| Crosses | Derbyshire Creek |
| Coordinates | 39.67083, -86.12219 |
| Material | Concrete |
| Design | Arch - Deck |
| Total Length | 24.0 ft (7.3 m) |
| Max Span | 23.3 ft (7.1 m) |
| Deck Width | 24.3 ft (7.4 m) |
| Deck Area | 54.0 sq m |
| Main Spans | 1 |
| Year Built | 1935 (reconstructed 1960) |
| Avg Daily Traffic | 1,716 (2019) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
| Last Inspection | July 2024 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 3 — Scour critical |
| Structure Number | 4900437 |
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.