US Bridges

Ky 3320 over I-71

Fair

Henry County, Kentucky · 0.75 MI S of Ky 146 · Structure no. 052B00052N

Built
1968
57 years old
Condition
Fair
inspected July 2023
Type
Tee Beam
Concrete Continuous
Length
230 ft
4 main spans
Daily traffic
477
2019 count
Owner
State
State Highway Agency

About this bridge

Ky 3320 over I-71 is a concrete continuous tee beam carrying Ky 3320 over I-71 in Henry County, Kentucky. It was built in 1968, so it is 57 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 477 vehicles a day, projected to reach 477 by 2039. The structure is 230 ft (70.1 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesKy 3320
CrossesI-71
Location0.75 MI S of Ky 146
RouteState Highway 3320
CountyHenry County
StateKentucky
Coordinates38.43528, -85.31389
Functional classRural Local

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating69.6 US tons
Inventory rating41.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length230 ft (70.1 m)
Longest span79 ft (24.2 m)
Deck width32 ft (9.7 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic477 (2019)
Projected traffic477 by 2039
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ky 3320 over I-71 built?

It was built in 1968, making it 57 years old in 2025.

What condition is Ky 3320 over I-71 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 Ky 3320 over I-71 carry?

About 477 vehicles per day (2019 count).

How long is Ky 3320 over I-71?

The structure is 230 ft (70.1 m) long with a longest span of 79 ft (24.2 m) and a deck 32 ft wide.

Who owns Ky 3320 over I-71?

It is owned by the State Highway Agency.