Structure 61309200000000 · Marion County, IL
Carries Tr-156 over Davidson Creek, 4 Mi NW Salem.
25 ft end to end, longest span 12 ft. 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 | Illinois |
| County | Marion |
| Location | 4 Mi NW Salem |
| Carries | Tr-156 |
| Crosses | Davidson Creek |
| Coordinates | 38.66560, -89.02358 |
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 24.9 ft (7.6 m) |
| Max Span | 12.1 ft (3.7 m) |
| Deck Width | 17.1 ft (5.2 m) |
| Deck Area | 39.5 sq m |
| Main Spans | 2 |
| Year Built | 1909 |
| Avg Daily Traffic | 25 (2022) |
| Truck Traffic | 20% |
| Lanes On Bridge | 1 |
| Last Inspection | January 2024 |
| Inspection Frequency | Every 24 months |
| Owner | Town/Township Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 061309200000000 |
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.