US Bridges

KY-109 over Unname Stream

Fair

Christian County, Kentucky · 4.8 MI Nor. of JCT Ky 168 · Structure no. 024B00056N

Built
1936
89 years old
Condition
Fair
inspected June 2022
Type
Culvert
Concrete
Length
31 ft
2 main spans
Daily traffic
1,968
2023 count
Owner
State
State Highway Agency

About this bridge

KY-109 over Unname Stream is a concrete culvert carrying KY-109 over Unname Stream in Christian County, Kentucky. It was built in 1936, so it is 89 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 1,968 vehicles a day, roughly 6% of them trucks, projected to reach 1,968 by 2043. The structure is 31 ft (9.4 m) long. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesKY-109
CrossesUnname Stream
Location4.8 MI Nor. of JCT Ky 168
RouteState Highway 109
CountyChristian County
StateKentucky
Coordinates36.95389, -87.54611
Functional classRural Major 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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2022
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 rating60 US tons
Inventory rating45 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 15
Structure length31 ft (9.4 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,968 (2023)
Projected traffic1,968 by 2043
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was KY-109 over Unname Stream built?

It was built in 1936, making it 89 years old in 2025.

What condition is KY-109 over Unname Stream 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 June 2022.

How much traffic does KY-109 over Unname Stream carry?

About 1,968 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is KY-109 over Unname Stream?

The structure is 31 ft (9.4 m) long with a longest span of 14 ft (4.3 m).

Who owns KY-109 over Unname Stream?

It is owned by the State Highway Agency.