US Bridges

I-75 South over Ky 620

Fair

Scott County, Kentucky · 1.8 Mi.N JCT Ky 620 · Structure no. 105B00122L

Built
1992
33 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
98 ft
1 main span
Daily traffic
22,755
2023 count
Owner
State
State Highway Agency

About this bridge

I-75 South over Ky 620 is a prestressed concrete stringer/multi-beam or girder carrying I-75 South over Ky 620 in Scott County, Kentucky. It was built in 1992, so it is 33 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 22,755 vehicles a day, roughly 24% of them trucks, projected to reach 28,216 by 2043. The structure is 98 ft (29.9 m) long and 63 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-75 South
CrossesKy 620
Location1.8 Mi.N JCT Ky 620
RouteInterstate 75
CountyScott County
StateKentucky
Coordinates38.30194, -84.55889
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110 US tons
Inventory rating67.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length98 ft (29.9 m)
Longest span95 ft (29 m)
Deck width63 ft (19.3 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,755 (2023)
Projected traffic28,216 by 2043
Trucks24%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$770,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-75 South over Ky 620 built?

It was built in 1992, making it 33 years old in 2025.

What condition is I-75 South over Ky 620 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 March 2023.

How much traffic does I-75 South over Ky 620 carry?

About 22,755 vehicles per day (2023 count), of which roughly 24% are trucks.

How long is I-75 South over Ky 620?

The structure is 98 ft (29.9 m) long with a longest span of 95 ft (29 m) and a deck 63 ft wide.

Who owns I-75 South over Ky 620?

It is owned by the State Highway Agency.