US Bridges

KY-620 over NS (cno&tp) System

Poor

Scott County, Kentucky · .4 MI from JCT I-75 · Structure no. 105B00105N

Built
1987
38 years old
Condition
Poor
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
300 ft
4 main spans
Daily traffic
11,576
2023 count
Owner
State
State Highway Agency

About this bridge

KY-620 over NS (cno&tp) System is a prestressed concrete continuous stringer/multi-beam or girder carrying KY-620 over NS (cno&tp) System in Scott County, Kentucky. It was built in 1987, so it is 38 years old, younger than the Kentucky average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 11,576 vehicles a day, roughly 21% of them trucks, projected to reach 11,576 by 2043. The structure is 300 ft (91.4 m) long and 85 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesKY-620
CrossesNS (cno&tp) System
Location.4 MI from JCT I-75
RouteState Highway 620
CountyScott County
StateKentucky
Coordinates38.27278, -84.5475
Functional classUrban Other Principal Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating63.2 US tons
Inventory rating37.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length300 ft (91.4 m)
Longest span102 ft (31.1 m)
Deck width85 ft (26 m)
Roadway width82 ft (25 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,576 (2023)
Projected traffic11,576 by 2043
Trucks21%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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$3.2 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was KY-620 over NS (cno&tp) System built?

It was built in 1987, making it 38 years old in 2025.

What condition is KY-620 over NS (cno&tp) System in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2023.

How much traffic does KY-620 over NS (cno&tp) System carry?

About 11,576 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is KY-620 over NS (cno&tp) System?

The structure is 300 ft (91.4 m) long with a longest span of 102 ft (31.1 m) and a deck 85 ft wide.

Who owns KY-620 over NS (cno&tp) System?

It is owned by the State Highway Agency.