US Bridges

I-75 over Ky 1804

Fair

Whitley County, Kentucky · Nbl 1.0 MI N of Tenn ST L · Structure no. 118B00053R

Built
1962
63 years old
Condition
Fair
inspected February 2023
Type
Tee Beam
Concrete
Length
154 ft
3 main spans
Daily traffic
16,501
2023 count
Owner
State
State Highway Agency

About this bridge

I-75 over Ky 1804 is a concrete tee beam carrying I-75 over Ky 1804 in Whitley County, Kentucky. It was built in 1962, so it is 63 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 16,501 vehicles a day, roughly 31% of them trucks, projected to reach 20,461 by 2043. The structure is 154 ft (46.9 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-75
CrossesKy 1804
LocationNbl 1.0 MI N of Tenn ST L
RouteInterstate 75
CountyWhitley County
StateKentucky
Coordinates36.60583, -84.10556
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.8 US tons
Inventory rating45.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length154 ft (46.9 m)
Longest span58 ft (17.7 m)
Deck width38 ft (11.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,501 (2023)
Projected traffic20,461 by 2043
Trucks31%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$689,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-75 over Ky 1804 built?

It was built in 1962, making it 63 years old in 2025.

What condition is I-75 over Ky 1804 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 Ky 1804 carry?

About 16,501 vehicles per day (2023 count), of which roughly 31% are trucks.

How long is I-75 over Ky 1804?

The structure is 154 ft (46.9 m) long with a longest span of 58 ft (17.7 m) and a deck 38 ft wide.

Who owns I-75 over Ky 1804?

It is owned by the State Highway Agency.