US Bridges

US 421 over Trib to Drennon Creek

FairPosted for load

Henry County, Kentucky · 0.40 MI N of Ky 22 · Structure no. 052B00018N

Built
1929
96 years old
Condition
Fair
inspected July 2023
Type
Tee Beam
Concrete
Length
23 ft
1 main span
Daily traffic
1,692
2021 count
Owner
State
State Highway Agency

About this bridge

US 421 over Trib to Drennon Creek is a concrete tee beam carrying US 421 over Trib to Drennon Creek in Henry County, Kentucky. It was built in 1929, so it is 96 years old, older 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 1,692 vehicles a day, roughly 16% of them trucks, projected to reach 1,692 by 2041. The structure is 23 ft (7 m) long and 22 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesUS 421
CrossesTrib to Drennon Creek
Location0.40 MI N of Ky 22
RouteU.S. Route 421
CountyHenry County
StateKentucky
Coordinates38.38306, -85.14972
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.2 US tons
Inventory rating35.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length23 ft (7 m)
Longest span20 ft (6.1 m)
Deck width22 ft (6.7 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,692 (2021)
Projected traffic1,692 by 2041
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$82,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US 421 over Trib to Drennon Creek built?

It was built in 1929, making it 96 years old in 2025.

What condition is US 421 over Trib to Drennon Creek 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 Trib to Drennon Creek carry?

About 1,692 vehicles per day (2021 count), of which roughly 16% are trucks.

How long is US 421 over Trib to Drennon Creek?

The structure is 23 ft (7 m) long with a longest span of 20 ft (6.1 m) and a deck 22 ft wide.

Who owns US 421 over Trib to Drennon Creek?

It is owned by the State Highway Agency.