US 69 S over Thornton Mill CR
GoodClay County, Missouri · S 28 T 51 N R 32 W · Structure no. 4343
- Built
- 1996
- 29 years old
- Condition
- Good
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 125 ft
- 3 main spans
- Daily traffic
- 8,601
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
US 69 S over Thornton Mill CR is a prestressed concrete continuous stringer/multi-beam or girder carrying US 69 S over Thornton Mill CR in Clay County, Missouri. It was built in 1996, so it is 29 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 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 8,601 vehicles a day, roughly 3% of them trucks, projected to reach 13,762 by 2044. The structure is 125 ft (38.1 m) long and 78 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 | 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 US 69 S over Thornton Mill CR built?
It was built in 1996, making it 29 years old in 2025.
What condition is US 69 S over Thornton Mill 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 2024.
How much traffic does US 69 S over Thornton Mill CR carry?
About 8,601 vehicles per day (2024 count), of which roughly 3% are trucks.
How long is US 69 S over Thornton Mill CR?
The structure is 125 ft (38.1 m) long with a longest span of 54 ft (16.5 m) and a deck 78 ft wide.
Who owns US 69 S over Thornton Mill CR?
It is owned by the State Highway Agency.