US Bridges

Ky 146 over I-71

FairPosted for load

Oldham County, Kentucky · 0.75 MI W of Ky 1817 · Structure no. 093B00009N

Built
1968
57 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
335 ft
4 main spans
Daily traffic
13,771
2021 count
Owner
State
State Highway Agency

About this bridge

Ky 146 over I-71 is a steel continuous stringer/multi-beam or girder carrying Ky 146 over I-71 in Oldham County, Kentucky. It was built in 1968, so it is 57 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. Its operating status is: posted for load restriction.

It carries about 13,771 vehicles a day, roughly 6% of them trucks, projected to reach 13,771 by 2041. The structure is 335 ft (102.2 m) long and 35 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesKy 146
CrossesI-71
Location0.75 MI W of Ky 1817
RouteState Highway 146
CountyOldham County
StateKentucky
Coordinates38.36917, -85.44389
Functional classUrban Minor Arterial

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.9 US tons
Inventory rating33.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length335 ft (102.2 m)
Longest span93 ft (28.3 m)
Deck width35 ft (10.6 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,771 (2021)
Projected traffic13,771 by 2041
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ky 146 over I-71 built?

It was built in 1968, making it 57 years old in 2025.

What condition is Ky 146 over I-71 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 March 2023.

How much traffic does Ky 146 over I-71 carry?

About 13,771 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is Ky 146 over I-71?

The structure is 335 ft (102.2 m) long with a longest span of 93 ft (28.3 m) and a deck 35 ft wide.

Who owns Ky 146 over I-71?

It is owned by the State Highway Agency.