Structure 105B00121L · Scott County, KY

I-75 South over Ns (cno&tp) System

Carries I-75 South over Ns (cno&tp) System, .09 Mi.s Jct Ky 620 Nbl.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT309 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

309 ft end to end, longest span 125 ft: about 4 semi-trucks nose to tail. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a tee-beam bridge.

Built199432 years old
Length309.1 ft94.2 m
Daily traffic25,877counted 2016
Last inspectedMarch 2023every 24 months

Location

StateKentucky
CountyScott
Location.09 Mi.s Jct Ky 620 Nbl
CarriesI-75 South
CrossesNs (cno&tp) System
Coordinates38.26444, -84.55333

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length309.1 ft (94.2 m)
Max Span125.0 ft (38.1 m)
Deck Width65.6 ft (20 m)
Deck Area1,884 sq m
Main Spans3
Year Built1994

Traffic

Avg Daily Traffic25,877 (2016)
Truck Traffic19%
Lanes On Bridge3

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number105B00121L

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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