US Bridges

US-68 over Flat Run

Fair

Bourbon County, Kentucky · 3.2 MI E of Ky 1940 · Structure no. 009B00075N

Built
2011
14 years old
Condition
Fair
inspected February 2024
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
7,353
2022 count
Owner
State
State Highway Agency

About this bridge

US-68 over Flat Run is a concrete culvert carrying US-68 over Flat Run in Bourbon County, Kentucky. It was built in 2011, so it is 14 years old, younger 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 7,353 vehicles a day, roughly 12% of them trucks, projected to reach 7,353 by 2042. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 3.7 mi (6 km).

CarriesUS-68
CrossesFlat Run
Location3.2 MI E of Ky 1940
RouteU.S. Route 68
Coordinates38.2575, -84.19528
Functional classRural Principal Arterial - Other

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 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.6 US tons
Inventory rating50 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadGreater than HL 93
Structure length24 ft (7.3 m)
Longest span12 ft (3.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,353 (2022)
Projected traffic7,353 by 2042
Trucks12%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US-68 over Flat Run built?

It was built in 2011, making it 14 years old in 2025.

What condition is US-68 over Flat Run 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 2024.

How much traffic does US-68 over Flat Run carry?

About 7,353 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is US-68 over Flat Run?

The structure is 24 ft (7.3 m) long with a longest span of 12 ft (3.6 m).

Who owns US-68 over Flat Run?

It is owned by the State Highway Agency.