Structure 74318500000000 · Piatt County, IL
Carries Tr 164 over Stream, 3.0 Mi SE Mansfield.
A culvert 22 ft across. 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, so those are drawn as typical for a culvert.
| State | Illinois |
| County | Piatt |
| Location | 3.0 Mi SE Mansfield |
| Carries | Tr 164 |
| Crosses | Stream |
| Coordinates | 40.16539, -88.47503 |
| Material | Concrete |
| Design | Culvert |
| Total Length | 22.0 ft (6.7 m) |
| Max Span | 20.0 ft (6.1 m) |
| Deck Width | 26.2 ft (8 m) |
| Deck Area | 53.6 sq m |
| Main Spans | 1 |
| Year Built | 1979 |
| Avg Daily Traffic | 75 (2020) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
| Last Inspection | January 2022 |
| Inspection Frequency | Every 48 months |
| Owner | Town/Township Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 074318500000000 |
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.