Structure 315710 · Story County, IA
Carries 113th ST (fld) over Road Ditch, 085211003.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 5 of 9.
How ratings work21 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 multi-beam bridge.
| State | Iowa |
| County | Story |
| Location | 085211003 |
| Carries | 113th ST (fld) |
| Crosses | Road Ditch |
| Coordinates | 42.19142, -93.28031 |
| Material | Wood or Timber |
| Design | Stringer/Multi-beam |
| Total Length | 21.0 ft (6.4 m) |
| Max Span | 19.0 ft (5.8 m) |
| Deck Width | 16.1 ft (4.9 m) |
| Deck Area | 31.4 sq m |
| Main Spans | 1 |
| Year Built | 1900 (reconstructed 1988) |
| Avg Daily Traffic | 10 (2022) |
| Lanes On Bridge | 1 |
| Last Inspection | November 2022 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 000000000315710 |
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.