N Main ST over Knob CR
Poor Condition54 years old200 vehicles/day
Location
| State | Missouri |
| County | Iron |
| Location | S 31 T 34 N R 4 E |
| Carries | N Main ST |
| Crosses | Knob CR |
| Coordinates | 37.61180, -90.63030 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 4 (Poor) |
| Superstructure | 2 (Critical) |
| Substructure | 3 (Serious) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 7 — Countermeasures installed |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 60.0 ft (18.3 m) |
| Max Span | 28.9 ft (8.8 m) |
| Deck Width | 19.7 ft (6 m) |
| Deck Area | 109.8 sq m |
| Main Spans | 2 |
| Year Built | 1972 |
Traffic
| Avg Daily Traffic | 200 (2023) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 225 |
| Inspection Frequency | Every 12 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 13640 |