US Bridges

Smith Mills-Uniont over Highland Creek

Fair

Union County, Kentucky · 0.1 MI N JCT Ky 360 · Structure no. 113C00009N

Built
1977
48 years old
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
118 ft
3 main spans
Daily traffic
60
2006 count
Owner
County
County Highway Agency

About this bridge

Smith Mills-Uniont over Highland Creek is a prestressed concrete box beam or girders - multiple carrying Smith Mills-Uniont over Highland Creek in Union County, Kentucky. It was built in 1977, so it is 48 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.

It carries about 60 vehicles a day, projected to reach 60 by 2026. The structure is 118 ft (36 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSmith Mills-Uniont
CrossesHighland Creek
Location0.1 MI N JCT Ky 360
RouteCounty Highway 1034
CountyUnion County
StateKentucky
Coordinates37.77194, -87.84694
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.3 US tons
Inventory rating44 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadH 20
Structure length118 ft (36 m)
Longest span47 ft (14.3 m)
Deck width24 ft (7.4 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2006)
Projected traffic60 by 2026
Trucks—
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

OwnerCounty Highway Agency
Maintained byCounty 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 Smith Mills-Uniont over Highland Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is Smith Mills-Uniont over Highland 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 March 2023.

How much traffic does Smith Mills-Uniont over Highland Creek carry?

About 60 vehicles per day (2006 count).

How long is Smith Mills-Uniont over Highland Creek?

The structure is 118 ft (36 m) long with a longest span of 47 ft (14.3 m) and a deck 24 ft wide.

Who owns Smith Mills-Uniont over Highland Creek?

It is owned by the County Highway Agency.