US Bridges

KY-313 over Unknown Creek

Fair

Hardin County, Kentucky · 1.9 MI W JCT I-65 · Structure no. 047B00157N

Built
1996
29 years old
Condition
Fair
inspected November 2021
Type
Culvert
Concrete
Length
23 ft
1 main span
Daily traffic
8,380
2022 count
Owner
State
State Highway Agency

About this bridge

KY-313 over Unknown Creek is a concrete culvert carrying KY-313 over Unknown Creek in Hardin County, Kentucky. It was built in 1996, so it is 29 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 8,380 vehicles a day, roughly 10% of them trucks, projected to reach 8,380 by 2042. The structure is 23 ft (6.9 m) long and 278 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesKY-313
CrossesUnknown Creek
Location1.9 MI W JCT I-65
RouteState Highway 313
CountyHardin County
StateKentucky
Coordinates37.80167, -85.77972
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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2021
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating107.1 US tons
Inventory rating107.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length23 ft (6.9 m)
Longest span23 ft (6.9 m)
Deck width278 ft (84.7 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,380 (2022)
Projected traffic8,380 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkSTRAHNET connector

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-313 over Unknown Creek built?

It was built in 1996, making it 29 years old in 2025.

What condition is KY-313 over Unknown 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 2021.

How much traffic does KY-313 over Unknown Creek carry?

About 8,380 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is KY-313 over Unknown Creek?

The structure is 23 ft (6.9 m) long with a longest span of 23 ft (6.9 m) and a deck 278 ft wide.

Who owns KY-313 over Unknown Creek?

It is owned by the State Highway Agency.