US 63 S over Grindstone CR
FairBoone County, Missouri · S 36 T 51 N R 13 W · Structure no. 11782
- Built
- 1925
- 100 years old, rebuilt 1999
- Condition
- Fair
- inspected September 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 32 ft
- 3 main spans
- Daily traffic
- 15,601
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
US 63 S over Grindstone CR is a concrete continuous culvert carrying US 63 S over Grindstone CR in Boone County, Missouri. It was built in 1925 and reconstructed in 1999, 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 15,601 vehicles a day, roughly 14% of them trucks, projected to reach 25,742 by 2044. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 8.7 mi (14 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 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 1925, making it 100 years old in 2025. It was reconstructed in 1999.
What condition is US 63 S over Grindstone CR in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2023.
How much traffic does US 63 S over Grindstone CR carry?
About 15,601 vehicles per day (2024 count), of which roughly 14% are trucks.
How long is US 63 S over Grindstone CR?
The structure is 32 ft (9.8 m) long with a longest span of 11 ft (3.4 m).
Who owns US 63 S over Grindstone CR?
It is owned by the State Highway Agency.