Old HWY 21 S over Mo 21
Fair Condition39 years old11,418 vehicles/day
Location
| State | Missouri |
| County | Jefferson |
| Location | S 27 T 43 N R 5 E |
| Carries | Old HWY 21 S |
| Crosses | Mo 21 |
| Coordinates | 38.44131, -90.45639 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 342.8 ft (104.5 m) |
| Max Span | 110.9 ft (33.8 m) |
| Deck Width | 46.9 ft (14.3 m) |
| Deck Area | 1494.3 sq m |
| Main Spans | 4 |
| Year Built | 1987 |
Traffic
| Avg Daily Traffic | 11,418 (2024) |
| Truck Traffic | 5% |
| 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 | 2663 |