US Bridges

US-421 over Henrys Fork

Poor

Leslie County, Kentucky · .80 MI E of JCT Ky 1482 · Structure no. 066B00016N

Built
1933
92 years old
Condition
Poor
inspected December 2024
Type
Culvert
Concrete
Length
54 ft
3 main spans
Daily traffic
668
2023 count
Owner
State
State Highway Agency

About this bridge

US-421 over Henrys Fork is a concrete culvert carrying US-421 over Henrys Fork in Leslie County, Kentucky. It was built in 1933, so it is 92 years old, older than the Kentucky average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 668 vehicles a day, roughly 5% of them trucks, projected to reach 668 by 2043. The structure is 54 ft (16.5 m) long and 34 ft wide.

Location

Open in Google Maps
CarriesUS-421
CrossesHenrys Fork
Location.80 MI E of JCT Ky 1482
RouteU.S. Route 421
CountyLeslie County
StateKentucky
Coordinates37.15639, -83.50583
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Culvert3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionDecember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating70.7 US tons
Inventory rating42.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 15
Structure length54 ft (16.5 m)
Longest span17 ft (5.2 m)
Deck width34 ft (10.5 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic668 (2023)
Projected traffic668 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US-421 over Henrys Fork built?

It was built in 1933, making it 92 years old in 2025.

What condition is US-421 over Henrys Fork in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2024.

How much traffic does US-421 over Henrys Fork carry?

About 668 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is US-421 over Henrys Fork?

The structure is 54 ft (16.5 m) long with a longest span of 17 ft (5.2 m) and a deck 34 ft wide.

Who owns US-421 over Henrys Fork?

It is owned by the State Highway Agency.