US Bridges

KY-66 over Flat Creek

GoodPosted for load

Clay County, Kentucky · .10 MI NW of JCT Ky 2000 · Structure no. 026B00032N

Built
1957
68 years old
Condition
Good
inspected October 2023
Type
Culvert
Concrete
Length
51 ft
3 main spans
Daily traffic
435
2023 count
Owner
State
State Highway Agency

About this bridge

KY-66 over Flat Creek is a concrete culvert carrying KY-66 over Flat Creek in Clay County, Kentucky. It was built in 1957, so it is 68 years old, older 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. Its operating status is: posted for load restriction.

It carries about 435 vehicles a day, roughly 9% of them trucks, projected to reach 435 by 2043. The structure is 51 ft (15.5 m) long. If it were closed, the detour would be 21.7 mi (35 km).

Location

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CarriesKY-66
CrossesFlat Creek
Location.10 MI NW of JCT Ky 2000
RouteState Highway 66
CountyClay County
StateKentucky
Coordinates37.07806, -83.55472
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating25 US tons
Inventory rating15 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 15
Structure length51 ft (15.5 m)
Longest span16 ft (4.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic435 (2023)
Projected traffic435 by 2043
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 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-66 over Flat Creek built?

It was built in 1957, making it 68 years old in 2025.

What condition is KY-66 over Flat Creek 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 October 2023.

How much traffic does KY-66 over Flat Creek carry?

About 435 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is KY-66 over Flat Creek?

The structure is 51 ft (15.5 m) long with a longest span of 16 ft (4.9 m).

Who owns KY-66 over Flat Creek?

It is owned by the State Highway Agency.