Old RTE 63 over Grindstone CR
Good Condition101 years old7,500 vehicles/day
Location
| State | Missouri |
| County | Boone |
| Location | S 19 T 48 N R 12 W |
| Carries | Old RTE 63 |
| Crosses | Grindstone CR |
| Coordinates | 38.92692, -92.31135 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 148.0 ft (45.1 m) |
| Max Span | 55.1 ft (16.8 m) |
| Deck Width | 39.4 ft (12 m) |
| Deck Area | 541.2 sq m |
| Main Spans | 3 |
| Year Built | 1925 (reconstructed 1988) |
Traffic
| Avg Daily Traffic | 7,500 (2023) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | December 2024 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 15427 |