US Bridges

I-75 over Blake Fork Creek

Fair

Whitley County, Kentucky · 1.6 MI N of S-Ntrch US25W · Structure no. 118B00062N

Built
1967
58 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete
Length
33 ft
1 main span
Daily traffic
38,219
2023 count
Owner
State
State Highway Agency

About this bridge

I-75 over Blake Fork Creek is a concrete culvert carrying I-75 over Blake Fork Creek in Whitley 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 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 38,219 vehicles a day, roughly 27% of them trucks, projected to reach 47,391 by 2043. The structure is 33 ft (10.1 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesI-75
CrossesBlake Fork Creek
Location1.6 MI N of S-Ntrch US25W
RouteInterstate 75
CountyWhitley County
StateKentucky
Coordinates36.8175, -84.16556
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 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 length33 ft (10.1 m)
Longest span29 ft (8.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic38,219 (2023)
Projected traffic47,391 by 2043
Trucks27%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Blake Fork Creek built?

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

What condition is I-75 over Blake Fork 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 March 2023.

How much traffic does I-75 over Blake Fork Creek carry?

About 38,219 vehicles per day (2023 count), of which roughly 27% are trucks.

How long is I-75 over Blake Fork Creek?

The structure is 33 ft (10.1 m) long with a longest span of 29 ft (8.8 m).

Who owns I-75 over Blake Fork Creek?

It is owned by the State Highway Agency.