West Four Ridge RD over Mo 21
Fair Condition38 years old2,621 vehicles/day
Location
| State | Missouri |
| County | Jefferson |
| Location | S 7 T 42 N R 5 E |
| Carries | West Four Ridge RD |
| Crosses | Mo 21 |
| Coordinates | 38.39531, -90.50207 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 317.9 ft (96.9 m) |
| Max Span | 126.3 ft (38.5 m) |
| Deck Width | 35.4 ft (10.8 m) |
| Deck Area | 1046.5 sq m |
| Main Spans | 2 |
| Year Built | 1988 |
Traffic
| Avg Daily Traffic | 2,621 (2024) |
| Truck Traffic | 4% |
| 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 | 2528 |