US Bridges

KY-628 over I 75 @ 6.420

Fair

Whitley County, Kentucky · .30 MI W of JCT US 25W · Structure no. 118B00085N

Built
1964
61 years old
Condition
Fair
inspected February 2023
Type
Tee Beam
Concrete Continuous
Length
320 ft
4 main spans
Daily traffic
627
2022 count
Owner
State
State Highway Agency

About this bridge

KY-628 over I 75 @ 6.420 is a concrete continuous tee beam carrying KY-628 over I 75 @ 6.420 in Whitley County, Kentucky. It was built in 1964, so it is 61 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 627 vehicles a day, projected to reach 627 by 2042. The structure is 320 ft (97.5 m) long and 38 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesKY-628
CrossesI 75 @ 6.420
Location.30 MI W of JCT US 25W
RouteState Highway 628
Coordinates36.67556, -84.13306
Functional classRural Minor Collector

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.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating68.1 US tons
Inventory rating40.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length320 ft (97.5 m)
Longest span93 ft (28.3 m)
Deck width38 ft (11.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic627 (2022)
Projected traffic627 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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-628 over I 75 @ 6.420 built?

It was built in 1964, making it 61 years old in 2025.

What condition is KY-628 over I 75 @ 6.420 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 February 2023.

How much traffic does KY-628 over I 75 @ 6.420 carry?

About 627 vehicles per day (2022 count).

How long is KY-628 over I 75 @ 6.420?

The structure is 320 ft (97.5 m) long with a longest span of 93 ft (28.3 m) and a deck 38 ft wide.

Who owns KY-628 over I 75 @ 6.420?

It is owned by the State Highway Agency.