US Bridges

I-71 NB over Zorn Ave

Fair

Jefferson County, Kentucky · 3.3 MI S of I-264 · Structure no. 056B00167R

Built
1967
58 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
275 ft
3 main spans
Daily traffic
26,731
2023 count
Owner
State
State Highway Agency

About this bridge

I-71 NB over Zorn Ave is a steel continuous stringer/multi-beam or girder carrying I-71 NB over Zorn Ave in Jefferson County, Kentucky. It was built in 1967, so it is 58 years old, older than the Kentucky average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 26,731 vehicles a day, roughly 9% of them trucks, projected to reach 29,404 by 2043. The structure is 275 ft (83.7 m) long and 36 ft wide.

Location

Open in Google Maps
CarriesI-71 NB
CrossesZorn Ave
Location3.3 MI S of I-264
RouteInterstate 71
CountyJefferson County
StateKentucky
Coordinates38.27472, -85.69722
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.6 US tons
Inventory rating45.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length275 ft (83.7 m)
Longest span120 ft (36.6 m)
Deck width36 ft (10.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,731 (2023)
Projected traffic29,404 by 2043
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$1.1 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-71 NB over Zorn Ave built?

It was built in 1967, making it 58 years old in 2025.

What condition is I-71 NB over Zorn Ave in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.

How much traffic does I-71 NB over Zorn Ave carry?

About 26,731 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is I-71 NB over Zorn Ave?

The structure is 275 ft (83.7 m) long with a longest span of 120 ft (36.6 m) and a deck 36 ft wide.

Who owns I-71 NB over Zorn Ave?

It is owned by the State Highway Agency.