US 421 over Sixmile Creek
GoodHenry County, Kentucky · 0.85 MI N of Franklin Cl · Structure no. 052B00079N
- Built
- 1996
- 29 years old
- Condition
- Good
- inspected July 2021
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 174 ft
- 3 main spans
- Daily traffic
- 388
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 421 over Sixmile Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying US 421 over Sixmile Creek in Henry County, Kentucky. It was built in 1996, so it is 29 years old, younger than the Kentucky average of 46.6 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 388 vehicles a day, roughly 13% of them trucks, projected to reach 388 by 2043. The structure is 174 ft (52.9 m) long and 39 ft wide. If it were closed, the detour would be 2.5 mi (4 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 | 7 Good | Some minor problems. |
| 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 421 over Sixmile Creek built?
It was built in 1996, making it 29 years old in 2025.
What condition is US 421 over Sixmile Creek 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 July 2021.
How much traffic does US 421 over Sixmile Creek carry?
About 388 vehicles per day (2023 count), of which roughly 13% are trucks.
How long is US 421 over Sixmile Creek?
The structure is 174 ft (52.9 m) long with a longest span of 72 ft (22 m) and a deck 39 ft wide.
Who owns US 421 over Sixmile Creek?
It is owned by the State Highway Agency.