Structure 60C00081N · Knott County, KY

Big Springs Br over Jones Fork

Carries Big Springs Br over Jones Fork, .1 Mi SE Of Jct Ky 550.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT40 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

40 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.

Built198046 years old
Length40.0 ft12.2 m
Daily traffic25counted 2014
Last inspectedJune 2022every 48 months

Location

StateKentucky
CountyKnott
Location.1 Mi SE Of Jct Ky 550
CarriesBig Springs Br
CrossesJones Fork
Coordinates37.43861, -82.86361

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length40.0 ft (12.2 m)
Max Span37.1 ft (11.3 m)
Deck Width18.4 ft (5.6 m)
Deck Area68.3 sq m
Main Spans1
Year Built1980

Traffic

Avg Daily Traffic25 (2014)
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2022
Inspection FrequencyEvery 48 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number060C00081N

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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