ST Marys RD over Knob CR
Fair Condition38 years old750 vehicles/day
Location
| State | Missouri |
| County | Iron |
| Location | S 32 T 34 N R 4 E |
| Carries | ST Marys RD |
| Crosses | Knob CR |
| Coordinates | 37.60210, -90.61840 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 7 — Countermeasures installed |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Tee Beam |
| Total Length | 81.0 ft (24.7 m) |
| Max Span | 37.1 ft (11.3 m) |
| Deck Width | 26.6 ft (8.1 m) |
| Deck Area | 200.1 sq m |
| Main Spans | 3 |
| Year Built | 1988 |
Traffic
| Avg Daily Traffic | 750 (2023) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 225 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 13451 |