Structure 34988 · Jefferson County, MO
Carries Maple DR over Big Muddy CR, S 2991 T 43 N R 6 E.
A culvert 22 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 | Jefferson |
| Location | S 2991 T 43 N R 6 E |
| Carries | Maple DR |
| Crosses | Big Muddy CR |
| Coordinates | 38.44550, -90.38022 |
| Material | Concrete |
| Design | Culvert |
| Total Length | 21.7 ft (6.6 m) |
| Max Span | 10.2 ft (3.1 m) |
| Deck Width | 44.9 ft (13.7 m) |
| Deck Area | 90.4 sq m |
| Main Spans | 2 |
| Year Built | 2003 |
| Avg Daily Traffic | 1,170 (2023) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
| Last Inspection | March 2023 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Historical significance is not determined |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 34988 |
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.