Mo 21 S over Big Rvr
Good Condition38 years old4,078 vehicles/day
Location
| State | Missouri |
| County | Washington |
| Location | S 25 T 36 N R 2 E |
| Carries | Mo 21 S |
| Crosses | Big Rvr |
| Coordinates | 37.81149, -90.77387 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 261.2 ft (79.6 m) |
| Max Span | 65.6 ft (20 m) |
| Deck Width | 41.3 ft (12.6 m) |
| Deck Area | 1003.0 sq m |
| Main Spans | 4 |
| Year Built | 1988 |
Traffic
| Avg Daily Traffic | 4,078 (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 | 3658 |