US-421 over Martins Fk CSX KY-3001
GoodHarlan County, Kentucky · Martins Fk CSX OLD421 · Structure no. 048B00189N
- Built
- 2004
- 21 years old
- Condition
- Good
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 1,165 ft
- 10 main spans
- Daily traffic
- 2,750
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
US-421 over Martins Fk CSX KY-3001 is a prestressed concrete continuous stringer/multi-beam or girder carrying US-421 over Martins Fk CSX KY-3001 in Harlan County, Kentucky. It was built in 2004, so it is 21 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 2,750 vehicles a day, roughly 11% of them trucks, projected to reach 2,750 by 2042. The structure is 1,165 ft (355.1 m) long and 50 ft wide.
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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US-421 over Martins Fk CSX KY-3001 built?
It was built in 2004, making it 21 years old in 2025.
What condition is US-421 over Martins Fk CSX KY-3001 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 June 2023.
How much traffic does US-421 over Martins Fk CSX KY-3001 carry?
About 2,750 vehicles per day (2022 count), of which roughly 11% are trucks.
How long is US-421 over Martins Fk CSX KY-3001?
The structure is 1,165 ft (355.1 m) long with a longest span of 126 ft (38.4 m) and a deck 50 ft wide.
Who owns US-421 over Martins Fk CSX KY-3001?
It is owned by the State Highway Agency.