Old RTE 63 over Grindstone CR
GoodBoone County, Missouri · S 19 T 48 N R 12 W · Structure no. 15427
- Built
- 1925
- 100 years old, rebuilt 1988
- Condition
- Good
- inspected December 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 148 ft
- 3 main spans
- Daily traffic
- 7,500
- 2023 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Old RTE 63 over Grindstone CR is a prestressed concrete stringer/multi-beam or girder carrying Old RTE 63 over Grindstone CR in Boone County, Missouri. It was built in 1925 and reconstructed in 1988, so it is 100 years old, older than the Missouri average of 45.1 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 7,500 vehicles a day, roughly 5% of them trucks, projected to reach 13,125 by 2043. The structure is 148 ft (45.1 m) long and 39 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Old RTE 63 over Grindstone CR built?
It was built in 1925, making it 100 years old in 2025. It was reconstructed in 1988.
What condition is Old RTE 63 over Grindstone CR in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2024.
How much traffic does Old RTE 63 over Grindstone CR carry?
About 7,500 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is Old RTE 63 over Grindstone CR?
The structure is 148 ft (45.1 m) long with a longest span of 55 ft (16.8 m) and a deck 39 ft wide.
Who owns Old RTE 63 over Grindstone CR?
It is owned by the City or Municipal Highway Agency.