Structure 3777 · St. Francois County, MO
Carries RT D S over Bannon Br, S 829 T 36 N R 6 W.
A culvert 23 ft across with 2 openings. 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 | Missouri |
| County | St. Francois |
| Location | S 829 T 36 N R 6 W |
| Carries | RT D S |
| Crosses | Bannon Br |
| Coordinates | 37.81172, -90.41804 |
| Material | Concrete Continuous |
| Design | Culvert |
| Total Length | 23.3 ft (7.1 m) |
| Max Span | 11.2 ft (3.4 m) |
| Deck Width | 44.0 ft (13.4 m) |
| Deck Area | 95.1 sq m |
| Main Spans | 2 |
| Year Built | 1989 |
| Avg Daily Traffic | 3,717 (2024) |
| Truck Traffic | 11% |
| Lanes On Bridge | 2 |
| Last Inspection | March 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 3777 |
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.