Mo 21 S over RT M
Good Condition29 years old9,028 vehicles/day
Location
| State | Missouri |
| County | Jefferson |
| Location | S 18 T 42 N R 5 E |
| Carries | Mo 21 S |
| Crosses | RT M |
| Coordinates | 38.37778, -90.50493 |
Condition Ratings
| Overall Condition | Good |
| Deck | 8 (Very Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 290.0 ft (88.4 m) |
| Max Span | 81.0 ft (24.7 m) |
| Deck Width | 50.9 ft (15.5 m) |
| Deck Area | 1370.2 sq m |
| Main Spans | 4 |
| Year Built | 1997 |
Traffic
| Avg Daily Traffic | 9,028 (2024) |
| Truck Traffic | 8% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 4 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 4323 |