Structure 56B00167R · Jefferson County, KY

I-71 NB over Zorn AVE

Carries I-71 NB over Zorn AVE, 3.3 Mi S Of I-264.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT275 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 6/9

275 ft end to end, longest span 120 ft: about 4 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 multi-beam bridge.

Built196759 years old
Length274.6 ft83.7 m
Daily traffic26,731counted 2023
Last inspectedApril 2023every 24 months

Location

StateKentucky
CountyJefferson
Location3.3 Mi S Of I-264
CarriesI-71 NB
CrossesZorn AVE
Coordinates38.27472, -85.69722

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length274.6 ft (83.7 m)
Max Span120.1 ft (36.6 m)
Deck Width35.8 ft (10.9 m)
Deck Area912.3 sq m
Main Spans3
Year Built1967

Traffic

Avg Daily Traffic26,731 (2023)
Truck Traffic9%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number056B00167R

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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