US-421 over Ky 1556 & Bobs Creek
GoodHarlan County, Kentucky · 8.123 MI NW Va.St Line · Structure no. 048B00188N
- Built
- 2004
- 21 years old
- Condition
- Good
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 950 ft
- 8 main spans
- Daily traffic
- 2,750
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
US-421 over Ky 1556 & Bobs Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying US-421 over Ky 1556 & Bobs Creek 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 950 ft (289.6 m) long and 50 ft wide.
Location
No coordinates are recorded for this structure.
Condition 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US-421 over Ky 1556 & Bobs Creek built?
It was built in 2004, making it 21 years old in 2025.
What condition is US-421 over Ky 1556 & Bobs 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 June 2023.
How much traffic does US-421 over Ky 1556 & Bobs Creek carry?
About 2,750 vehicles per day (2022 count), of which roughly 11% are trucks.
How long is US-421 over Ky 1556 & Bobs Creek?
The structure is 950 ft (289.6 m) long with a longest span of 125 ft (38.1 m) and a deck 50 ft wide.
Who owns US-421 over Ky 1556 & Bobs Creek?
It is owned by the State Highway Agency.