Structure 18684 · St. Francois County, MO
Carries Loughboro RD over Br Of ST Francis R, S 10 T 35 N R 4 E.
24 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 slab bridge.
| State | Missouri |
| County | St. Francois |
| Location | S 10 T 35 N R 4 E |
| Carries | Loughboro RD |
| Crosses | Br Of ST Francis R |
| Coordinates | 37.76442, -90.58291 |
| Material | Concrete |
| Design | Slab |
| Total Length | 24.0 ft (7.3 m) |
| Max Span | 12.1 ft (3.7 m) |
| Deck Width | 24.0 ft (7.3 m) |
| Deck Area | 53.3 sq m |
| Main Spans | 2 |
| Year Built | 1940 |
| Avg Daily Traffic | 65 (2023) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
| Last Inspection | December 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 5 — Stable for scour |
| Structure Number | 18684 |
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.