Structure 62C00033N · Larue County, KY

Blanton Road over Knob Creek

Carries Blanton Road over Knob Creek, 0.2 Mi E Of Jct US 31e.

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 FT64 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

64 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.

Built20197 years old
Length64.0 ft19.5 m
Daily traffic99counted 2011
Last inspectedJune 2021every 48 months

Location

StateKentucky
CountyLarue
Location0.2 Mi E Of Jct US 31e
CarriesBlanton Road
CrossesKnob Creek
Coordinates37.63639, -85.59917

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length64.0 ft (19.5 m)
Max Span58.4 ft (17.8 m)
Deck Width24.0 ft (7.3 m)
Deck Area142.3 sq m
Main Spans1
Year Built2019

Traffic

Avg Daily Traffic99 (2011)
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2021
Inspection FrequencyEvery 48 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number062C00033N

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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