US Bridges

US-421 over Hays Fork

Fair

Madison County, Kentucky · 0.2 MI S of JCT W/Ky 3376 · Structure no. 076B00095N

Built
1997
28 years old
Condition
Fair
inspected April 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
94 ft
2 main spans
Daily traffic
5,629
2022 count
Owner
State
State Highway Agency

About this bridge

US-421 over Hays Fork is a prestressed concrete continuous box beam or girders - single or spread carrying US-421 over Hays Fork in Madison County, Kentucky. It was built in 1997, so it is 28 years old, younger than the Kentucky average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 5,629 vehicles a day, roughly 6% of them trucks, projected to reach 5,629 by 2042. The structure is 94 ft (28.8 m) long and 39 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesUS-421
CrossesHays Fork
Location0.2 MI S of JCT W/Ky 3376
RouteU.S. Route 421
Coordinates37.64139, -84.23278
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating90.5 US tons
Inventory rating54.2 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length94 ft (28.8 m)
Longest span40 ft (12.3 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,629 (2022)
Projected traffic5,629 by 2042
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US-421 over Hays Fork built?

It was built in 1997, making it 28 years old in 2025.

What condition is US-421 over Hays Fork in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2024.

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

About 5,629 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is US-421 over Hays Fork?

The structure is 94 ft (28.8 m) long with a longest span of 40 ft (12.3 m) and a deck 39 ft wide.

Who owns US-421 over Hays Fork?

It is owned by the State Highway Agency.