US Bridges

US 421 over CSX Railroad

Fair

Henry County, Kentucky · 150 Ft N of Ky 574 · Structure no. 052B00081N

Built
2009
16 years old
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
3,586
2021 count
Owner
State
State Highway Agency

About this bridge

US 421 over CSX Railroad is a prestressed concrete box beam or girders - single or spread carrying US 421 over CSX Railroad in Henry County, Kentucky. It was built in 2009, so it is 16 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 3,586 vehicles a day, roughly 15% of them trucks, projected to reach 3,586 by 2041. The structure is 60 ft (18.4 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 421
CrossesCSX Railroad
Location150 Ft N of Ky 574
RouteU.S. Route 421
CountyHenry County
StateKentucky
Coordinates38.5275, -85.19083
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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.5 US tons
Inventory rating55.4 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length60 ft (18.4 m)
Longest span57 ft (17.5 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,586 (2021)
Projected traffic3,586 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 421 over CSX Railroad built?

It was built in 2009, making it 16 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 July 2023.

How much traffic does US 421 over CSX Railroad carry?

About 3,586 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is US 421 over CSX Railroad?

The structure is 60 ft (18.4 m) long with a longest span of 57 ft (17.5 m) and a deck 39 ft wide.

Who owns US 421 over CSX Railroad?

It is owned by the State Highway Agency.