Structure 28321000000000 · Franklin County, IL
Carries Tr 378 over Trib Mid Fk Salt CR, 2 Mi NE Thompsonvill.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.
How ratings work24 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 channel-beam bridge.
| State | Illinois |
| County | Franklin |
| Location | 2 Mi NE Thompsonvill |
| Carries | Tr 378 |
| Crosses | Trib Mid Fk Salt CR |
| Coordinates | 37.93734, -88.71119 |
| Material | Concrete |
| Design | Channel Beam |
| Total Length | 24.0 ft (7.3 m) |
| Max Span | 22.0 ft (6.7 m) |
| Deck Width | 22.6 ft (6.9 m) |
| Deck Area | 50.4 sq m |
| Main Spans | 1 |
| Year Built | 1978 |
| Avg Daily Traffic | 20 (2024) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
| Last Inspection | June 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 | 028321000000000 |
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.