US Bridges

I-75 Nc over Ky 338

Good

Boone County, Kentucky · 2.7 MI N. JCT I 71 · Structure no. 008B00078L

Built
1993
32 years old
Condition
Good
inspected June 2021
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
159 ft
3 main spans
Daily traffic
60,475
2019 count
Owner
State
State Highway Agency

About this bridge

I-75 Nc over Ky 338 is a prestressed concrete continuous stringer/multi-beam or girder carrying I-75 Nc over Ky 338 in Boone County, Kentucky. It was built in 1993, so it is 32 years old, younger than the Kentucky average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 60,475 vehicles a day, roughly 17% of them trucks, projected to reach 66,522 by 2039. The structure is 159 ft (48.5 m) long and 75 ft wide.

Location

Open in Google Maps
CarriesI-75 Nc
CrossesKy 338
Location2.7 MI N. JCT I 71
RouteInterstate 75
CountyBoone County
StateKentucky
Coordinates38.9175, -84.62917
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating106.3 US tons
Inventory rating63.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length159 ft (48.5 m)
Longest span53 ft (16.2 m)
Deck width75 ft (23 m)
Roadway width73 ft (22.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60,475 (2019)
Projected traffic66,522 by 2039
Trucks17%
Lanes on structure4
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 statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$1.5 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I-75 Nc over Ky 338 built?

It was built in 1993, making it 32 years old in 2025.

What condition is I-75 Nc over Ky 338 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2021.

How much traffic does I-75 Nc over Ky 338 carry?

About 60,475 vehicles per day (2019 count), of which roughly 17% are trucks.

How long is I-75 Nc over Ky 338?

The structure is 159 ft (48.5 m) long with a longest span of 53 ft (16.2 m) and a deck 75 ft wide.

Who owns I-75 Nc over Ky 338?

It is owned by the State Highway Agency.