US 63 N over Grindstone CR
Fair Condition50 years old24,618 vehicles/day
Location
| State | Missouri |
| County | Boone |
| Location | S 20 T 48 N R 12 W |
| Carries | US 63 N |
| Crosses | Grindstone CR |
| Coordinates | 38.92690, -92.29440 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 253.0 ft (77.1 m) |
| Max Span | 98.1 ft (29.9 m) |
| Deck Width | 42.3 ft (12.9 m) |
| Deck Area | 994.6 sq m |
| Main Spans | 3 |
| Year Built | 1976 |
Traffic
| Avg Daily Traffic | 24,618 (2024) |
| Truck Traffic | 8% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 923 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 2892 |