Structure 56B00310L · Jefferson County, KY

Ky 864 SB over Ns Railroad

Carries Ky 864 SB over Ns Railroad, 0.35 Mi S Of I-264.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,143 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

1,143 ft end to end, longest span 69 ft: about 3.2 football fields. Lengths and the semi-truck 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.

Built198343 years old
Length1142.7 ft348.3 m
Daily traffic15,501counted 2023
Last inspectedJune 2024every 24 months

Location

StateKentucky
CountyJefferson
Location0.35 Mi S Of I-264
CarriesKy 864 SB
CrossesNs Railroad
Coordinates38.19075, -85.70454

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignStringer/Multi-beam
Total Length1142.7 ft (348.3 m)
Max Span68.9 ft (21 m)
Deck Width46.9 ft (14.3 m)
Deck Area4980.7 sq m
Main Spans17
Year Built1983

Traffic

Avg Daily Traffic15,501 (2023)
Truck Traffic10%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number056B00310L

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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