US Bridges

KY-390 over Thompsons Creek

FairPosted for load

Mercer County, Kentucky · .70 MI W. of JCT Ky 926 · Structure no. 084B00017N

Built
1955
70 years old
Condition
Fair
inspected August 2022
Type
Tee Beam
Concrete
Length
114 ft
3 main spans
Daily traffic
244
2023 count
Owner
State
State Highway Agency

About this bridge

KY-390 over Thompsons Creek is a concrete tee beam carrying KY-390 over Thompsons Creek in Mercer County, Kentucky. It was built in 1955, so it is 70 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. Its operating status is: posted for load restriction.

It carries about 244 vehicles a day, projected to reach 244 by 2043. The structure is 114 ft (34.7 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesKY-390
CrossesThompsons Creek
Location.70 MI W. of JCT Ky 926
RouteState Highway 390
CountyMercer County
StateKentucky
Coordinates37.87389, -85.02167
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2022
Inspection intervalevery 48 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating60.3 US tons
Inventory rating36.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length114 ft (34.7 m)
Longest span35 ft (10.7 m)
Deck width26 ft (8 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic244 (2023)
Projected traffic244 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was KY-390 over Thompsons Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is KY-390 over Thompsons 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 August 2022.

How much traffic does KY-390 over Thompsons Creek carry?

About 244 vehicles per day (2023 count).

How long is KY-390 over Thompsons Creek?

The structure is 114 ft (34.7 m) long with a longest span of 35 ft (10.7 m) and a deck 26 ft wide.

Who owns KY-390 over Thompsons Creek?

It is owned by the State Highway Agency.