US Bridges

KY-324 over Mill Creek

Fair

Mason County, Kentucky · 0.4 Mi. W. -Jct Ky 11 · Structure no. 081B00052N

Built
1980
45 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
166 ft
3 main spans
Daily traffic
890
2023 count
Owner
State
State Highway Agency

About this bridge

KY-324 over Mill Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying KY-324 over Mill Creek in Mason County, Kentucky. It was built in 1980, so it is 45 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 890 vehicles a day, projected to reach 890 by 2043. The structure is 166 ft (50.6 m) long and 36 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

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CarriesKY-324
CrossesMill Creek
Location0.4 Mi. W. -Jct Ky 11
RouteState Highway 324
CountyMason County
StateKentucky
Coordinates38.4975, -83.76361
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 inspectionNovember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating91.8 US tons
Inventory rating55.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length166 ft (50.6 m)
Longest span60 ft (18.3 m)
Deck width36 ft (11.1 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic890 (2023)
Projected traffic890 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemNo

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 KY-324 over Mill Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is KY-324 over Mill 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 November 2023.

How much traffic does KY-324 over Mill Creek carry?

About 890 vehicles per day (2023 count).

How long is KY-324 over Mill Creek?

The structure is 166 ft (50.6 m) long with a longest span of 60 ft (18.3 m) and a deck 36 ft wide.

Who owns KY-324 over Mill Creek?

It is owned by the State Highway Agency.