US Bridges

US-421 over CSX Railroad

Fair

Fayette County, Kentucky · .1MI W-Jct US 25 N Lxngtn · Structure no. 034B00123N

Built
1981
44 years old
Condition
Fair
inspected May 2021
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
214 ft
3 main spans
Daily traffic
15,425
2023 count
Owner
State
State Highway Agency

About this bridge

US-421 over CSX Railroad is a steel continuous stringer/multi-beam or girder carrying US-421 over CSX Railroad in Fayette County, Kentucky. It was built in 1981, so it is 44 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 15,425 vehicles a day, roughly 9% of them trucks, projected to reach 15,425 by 2043. The structure is 214 ft (65.2 m) long and 90 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesUS-421
CrossesCSX Railroad
Location.1MI W-Jct US 25 N Lxngtn
RouteU.S. Route 421
CountyFayette County
StateKentucky
Coordinates38.055, -84.50694
Functional classUrban Other Principal 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating64.8 US tons
Inventory rating38.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length214 ft (65.2 m)
Longest span80 ft (24.4 m)
Deck width90 ft (27.4 m)
Roadway width67 ft (20.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,425 (2023)
Projected traffic15,425 by 2043
Trucks9%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US-421 over CSX Railroad built?

It was built in 1981, making it 44 years old in 2025.

What condition is US-421 over CSX Railroad 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 May 2021.

How much traffic does US-421 over CSX Railroad carry?

About 15,425 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is US-421 over CSX Railroad?

The structure is 214 ft (65.2 m) long with a longest span of 80 ft (24.4 m) and a deck 90 ft wide.

Who owns US-421 over CSX Railroad?

It is owned by the State Highway Agency.