Structure 72B00046N · Lyon County, KY

Ky-6020 over I-24 @ Mp. 050.701

Carries Ky-6020 over I-24 @ Mp. 050.701, .5 Mi N Of Jct Ky 93.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT148 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

148 ft end to end: about 2 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 multi-beam bridge.

Built197749 years old
Length148.0 ft45.1 m
Daily traffic46counted 2022
Last inspectedMarch 2022every 48 months

Location

StateKentucky
CountyLyon
Location.5 Mi N Of Jct Ky 93
CarriesKy-6020
CrossesI-24 @ Mp. 050.701
Coordinates36.99722, -87.95583

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length148.0 ft (45.1 m)
Max Span103.0 ft (31.4 m)
Deck Width31.8 ft (9.7 m)
Deck Area437.5 sq m
Main Spans1
Year Built1977

Traffic

Avg Daily Traffic46 (2022)
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionMarch 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number072B00046N

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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