Structure 56B00284N · Jefferson County, KY

I-64 over Ns Railroad

Carries I-64 over Ns Railroad, 0.4 Mi E Of I-264.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT2,662 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

2,662 ft end to end, longest span 118 ft: about 7.4 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.

Built196957 years old
Length2662.4 ft811.5 m
Daily traffic65,180counted 2017
Last inspectedJune 2023every 24 months

Location

StateKentucky
CountyJefferson
Location0.4 Mi E Of I-264
CarriesI-64
CrossesNs Railroad
Coordinates38.27722, -85.79889

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length2662.4 ft (811.5 m)
Max Span118.1 ft (36 m)
Deck Width94.2 ft (28.7 m)
Deck Area23290.0 sq m
Main Spans30
Year Built1969

Traffic

Avg Daily Traffic65,180 (2017)
Truck Traffic9%
Lanes On Bridge6

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number056B00284N

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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