Structure 5494 · Perry County, MO
Carries Mo 51 S over Zanner Br, S 34 T 35 N R 10 E.
A culvert 21 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 | Perry |
| Location | S 34 T 35 N R 10 E |
| Carries | Mo 51 S |
| Crosses | Zanner Br |
| Coordinates | 37.68981, -89.91144 |
| Material | Concrete Continuous |
| Design | Culvert |
| Total Length | 21.3 ft (6.5 m) |
| Max Span | 7.9 ft (2.4 m) |
| Deck Width | 40.0 ft (12.2 m) |
| Deck Area | 79.3 sq m |
| Main Spans | 2 |
| Year Built | 1932 |
| Avg Daily Traffic | 2,333 (2024) |
| Truck Traffic | 12% |
| Lanes On Bridge | 2 |
| Last Inspection | October 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 | 5494 |
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.