Mo 21 S over Gravois CR
Good Condition57 years old18,182 vehicles/day
Location
| State | Missouri |
| County | St. Louis |
| Location | S 2995 T 44 N R 6 E |
| Carries | Mo 21 S |
| Crosses | Gravois CR |
| Coordinates | 38.53270, -90.34035 |
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 | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 250.0 ft (76.2 m) |
| Max Span | 95.8 ft (29.2 m) |
| Deck Width | 74.8 ft (22.8 m) |
| Deck Area | 1737.4 sq m |
| Main Spans | 3 |
| Year Built | 1969 (reconstructed 1993) |
Traffic
| Avg Daily Traffic | 18,182 (2024) |
| Truck Traffic | 5% |
| Lanes On Bridge | 5 |
Inspection & Ownership
| Last Inspection | 724 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 947 |