US Bridges

I-71 over KY47

Fair

Gallatin County, Kentucky · Nbl @ Carroll Co.Ln. · Structure no. 039B00023R

Built
1967
58 years old
Condition
Fair
inspected July 2023
Type
Tee Beam
Concrete
Length
155 ft
3 main spans
Daily traffic
17,812
2023 count
Owner
State
State Highway Agency

About this bridge

I-71 over KY47 is a concrete tee beam carrying I-71 over KY47 in Gallatin County, Kentucky. It was built in 1967, so it is 58 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.

It carries about 17,812 vehicles a day, roughly 35% of them trucks, projected to reach 22,087 by 2043. The structure is 155 ft (47.2 m) long and 42 ft wide.

Location

Open in Google Maps
CarriesI-71
CrossesKY47
LocationNbl @ Carroll Co.Ln.
RouteInterstate 71
CountyGallatin County
StateKentucky
Coordinates38.68222, -84.96389
Functional classRural Principal Arterial - Interstate

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating105.1 US tons
Inventory rating63.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length155 ft (47.2 m)
Longest span52 ft (15.8 m)
Deck width42 ft (12.7 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,812 (2023)
Projected traffic22,087 by 2043
Trucks35%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$809,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-71 over KY47 built?

It was built in 1967, making it 58 years old in 2025.

What condition is I-71 over KY47 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 I-71 over KY47 carry?

About 17,812 vehicles per day (2023 count), of which roughly 35% are trucks.

How long is I-71 over KY47?

The structure is 155 ft (47.2 m) long with a longest span of 52 ft (15.8 m) and a deck 42 ft wide.

Who owns I-71 over KY47?

It is owned by the State Highway Agency.