Structure 67C00093N · Letcher County, KY

Cornfield DR over Boone Fork

Carries Cornfield DR over Boone Fork, .1 Mi N Of Ky 805.

Overall conditionGood

Set by its lowest-rated component: Substructure at 7 of 9.

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT58 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

58 ft end to end, longest span 30 ft. 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.

Built20206 years old
Length58.1 ft17.7 m
Daily traffic366counted 2009
Last inspectedMay 2022every 48 months

Location

StateKentucky
CountyLetcher
Location.1 Mi N Of Ky 805
CarriesCornfield DR
CrossesBoone Fork
Coordinates37.17167, -82.72583

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Multiple
Total Length58.1 ft (17.7 m)
Max Span29.5 ft (9 m)
Deck Width12.1 ft (3.7 m)
Deck Area65.5 sq m
Main Spans2
Year Built2020

Traffic

Avg Daily Traffic366 (2009)
Lanes On Bridge1

Inspection & Ownership

Last InspectionMay 2022
Inspection FrequencyEvery 48 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number067C00093N

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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