Structure 55B00034N · Jackson County, KY

Ky-3630 over Sturgeon Creek

Carries Ky-3630 over Sturgeon Creek, 3.6 Mi NE Of Jct Ky 1431.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT45 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 5/9 · sets the ratingSubstructure 7/9

45 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.

Built197551 years old
Length44.9 ft13.7 m
Daily traffic188counted 2023
Last inspectedFebruary 2024every 12 months

Location

StateKentucky
CountyJackson
Location3.6 Mi NE Of Jct Ky 1431
CarriesKy-3630
CrossesSturgeon Creek
Coordinates37.39722, -83.84556

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length44.9 ft (13.7 m)
Max Span42.0 ft (12.8 m)
Deck Width21.0 ft (6.4 m)
Deck Area87.7 sq m
Main Spans1
Year Built1975

Traffic

Avg Daily Traffic188 (2023)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number055B00034N

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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