Structure 60C00104N · Knott County, KY

Frogtown Road over Troublesome Creek

Carries Frogtown Road over Troublesome Creek, 0.01 M S Of Jct Ky-160.

Overall conditionGood

Set by its lowest-rated component: Superstructure at 8 of 9.

How ratings work
Deck9/9 · Excellent
Superstructuresets the rating8/9 · Very Good
Substructure9/9 · Excellent
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT48 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 9/9Superstructure 8/9 · sets the ratingSubstructure 9/9

48 ft end to end. Lengths and the car 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 box-beam bridge.

Built20233 years old
Length47.6 ft14.5 m
Daily traffic323counted 2024
Last inspectedJune 2024every 24 months

Location

StateKentucky
CountyKnott
Location0.01 M S Of Jct Ky-160
CarriesFrogtown Road
CrossesTroublesome Creek
Coordinates37.33361, -82.97250

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length47.6 ft (14.5 m)
Max Span45.9 ft (14 m)
Deck Width16.1 ft (4.9 m)
Deck Area71.0 sq m
Main Spans1
Year Built2023

Traffic

Avg Daily Traffic323 (2024)
Lanes On Bridge1

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number060C00104N

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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