Structure 60C00032N · Knott County, KY

Big Doubles Br over Little Carr Fork

Carries Big Doubles Br over Little Carr Fork, 0.04 Mi E Of Jct Ky 1410.

Overall conditionFair

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

How ratings work
Deck8/9 · Very Good
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT28 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 7/9Substructure 5/9 · sets the rating

28 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 multi-beam bridge.

Built1940rebuilt 2024
Length28.2 ft8.6 m
Daily traffic129counted 2010
Last inspectedJuly 2024every 24 months

Location

StateKentucky
CountyKnott
Location0.04 Mi E Of Jct Ky 1410
CarriesBig Doubles Br
CrossesLittle Carr Fork
Coordinates37.24222, -82.91056

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length28.2 ft (8.6 m)
Max Span26.9 ft (8.2 m)
Deck Width15.1 ft (4.6 m)
Deck Area39.6 sq m
Main Spans1
Year Built1940 (reconstructed 2024)

Traffic

Avg Daily Traffic129 (2010)
Lanes On Bridge1

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number060C00032N

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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