US Bridges

KY-1742 over Mill Creek

FairPosted for load

Adair County, Kentucky · .40 MI Nor of JCT Ky 551 · Structure no. 001B00072N

Built
1979
46 years old
Condition
Fair
inspected August 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
48 ft
1 main span
Daily traffic
76
2022 count
Owner
State
State Highway Agency

About this bridge

KY-1742 over Mill Creek is a prestressed concrete box beam or girders - multiple carrying KY-1742 over Mill Creek in Adair County, Kentucky. It was built in 1979, so it is 46 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. Its operating status is: posted for load restriction.

It carries about 76 vehicles a day, projected to reach 76 by 2042. The structure is 48 ft (14.6 m) long and 24 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

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CarriesKY-1742
CrossesMill Creek
Location.40 MI Nor of JCT Ky 551
RouteState Highway 1742
CountyAdair County
StateKentucky
Coordinates37.27278, -85.15528
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53.2 US tons
Inventory rating31.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length48 ft (14.6 m)
Longest span46 ft (14 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic76 (2022)
Projected traffic76 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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-1742 over Mill Creek built?

It was built in 1979, making it 46 years old in 2025.

What condition is KY-1742 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 August 2023.

How much traffic does KY-1742 over Mill Creek carry?

About 76 vehicles per day (2022 count).

How long is KY-1742 over Mill Creek?

The structure is 48 ft (14.6 m) long with a longest span of 46 ft (14 m) and a deck 24 ft wide.

Who owns KY-1742 over Mill Creek?

It is owned by the State Highway Agency.