US 63 S over Grindstone CR
GoodBoone County, Missouri · S 20 T 48 N R 12 W · Structure no. 29000
- Built
- 2002
- 23 years old
- Condition
- Good
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 230 ft
- 3 main spans
- Daily traffic
- 24,883
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
US 63 S over Grindstone CR is a prestressed concrete continuous stringer/multi-beam or girder carrying US 63 S over Grindstone CR in Boone County, Missouri. It was built in 2002, so it is 23 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 24,883 vehicles a day, roughly 10% of them trucks, projected to reach 41,057 by 2044. The structure is 230 ft (70.1 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 8 Very Good | No problems noted. |
| Superstructure | 9 Excellent | No problems noted. |
| 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 US 63 S over Grindstone CR built?
It was built in 2002, making it 23 years old in 2025.
What condition is US 63 S 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 September 2023.
How much traffic does US 63 S over Grindstone CR carry?
About 24,883 vehicles per day (2024 count), of which roughly 10% are trucks.
How long is US 63 S over Grindstone CR?
The structure is 230 ft (70.1 m) long with a longest span of 85 ft (25.9 m) and a deck 43 ft wide.
Who owns US 63 S over Grindstone CR?
It is owned by the State Highway Agency.