US Bridges

I-75 over Brier Creek

Fair

Whitley County, Kentucky · .40 MI Nor. of Ky 92 Ntrc · Structure no. 118B00061N

Built
1966
59 years old
Condition
Fair
inspected February 2023
Type
Culvert
Concrete
Length
32 ft
1 main span
Daily traffic
37,791
2023 count
Owner
State
State Highway Agency

About this bridge

I-75 over Brier Creek is a concrete culvert carrying I-75 over Brier Creek in Whitley County, Kentucky. It was built in 1966, so it is 59 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 6 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 37,791 vehicles a day, roughly 28% of them trucks, projected to reach 46,860 by 2043. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-75
CrossesBrier Creek
Location.40 MI Nor. of Ky 92 Ntrc
RouteInterstate 75
CountyWhitley County
StateKentucky
Coordinates36.72917, -84.17056
Functional classRural 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span28 ft (8.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic37,791 (2023)
Projected traffic46,860 by 2043
Trucks28%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-75 over Brier Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is I-75 over Brier Creek 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 I-75 over Brier Creek carry?

About 37,791 vehicles per day (2023 count), of which roughly 28% are trucks.

How long is I-75 over Brier Creek?

The structure is 32 ft (9.8 m) long with a longest span of 28 ft (8.5 m).

Who owns I-75 over Brier Creek?

It is owned by the State Highway Agency.