Structure 56B00105N · Jefferson County, KY

US 31e over Ns Railroad

Carries US 31e over Ns Railroad, 0.55 Mi S Of Hikes LN.

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
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT423 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 5/9 · sets the ratingSubstructure 6/9

423 ft end to end, longest span 65 ft: about 6 semi-trucks nose to tail. 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 tee-beam bridge.

Built195670 years old
Length423.2 ft129 m
Daily traffic27,078counted 2023
Last inspectedFebruary 2024every 24 months

Location

StateKentucky
CountyJefferson
Location0.55 Mi S Of Hikes LN
CarriesUS 31e
CrossesNs Railroad
Coordinates38.19222, -85.65472

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length423.2 ft (129 m)
Max Span65.0 ft (19.8 m)
Deck Width67.3 ft (20.5 m)
Deck Area2644.5 sq m
Main Spans7
Year Built1956

Traffic

Avg Daily Traffic27,078 (2023)
Truck Traffic4%
Lanes On Bridge4
Lanes Under Bridge3

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number056B00105N

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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