Mo 21 S over Cannon Mine
Fair Condition94 years old5,009 vehicles/day
Location
| State | Missouri |
| County | Washington |
| Location | S 28 T 39 N R 3 E |
| Carries | Mo 21 S |
| Crosses | Cannon Mine |
| Coordinates | 38.07567, -90.71464 |
Condition Ratings
| Overall Condition | Fair |
| Channel/Waterway | 7 (Good) |
| Culvert | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Culvert |
| Total Length | 33.1 ft (10.1 m) |
| Max Span | 9.8 ft (3 m) |
| Deck Width | 38.1 ft (11.6 m) |
| Deck Area | 117.2 sq m |
| Main Spans | 3 |
| Year Built | 1932 |
Traffic
| Avg Daily Traffic | 5,009 (2024) |
| Truck Traffic | 9% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 624 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 5645 |