US Bridges

KY-91 over Unname Stream

FairPosted for load

Christian County, Kentucky · 1.4 MI N.W. of JCT Ky 168 · Structure no. 024B00047N

Built
1932
93 years old
Condition
Fair
inspected June 2022
Type
Tee Beam
Concrete
Length
33 ft
1 main span
Daily traffic
3,948
2020 count
Owner
State
State Highway Agency

About this bridge

KY-91 over Unname Stream is a concrete tee beam carrying KY-91 over Unname Stream in Christian County, Kentucky. It was built in 1932, so it is 93 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. Its operating status is: posted for load restriction.

It carries about 3,948 vehicles a day, roughly 7% of them trucks, projected to reach 3,948 by 2040. The structure is 33 ft (10.1 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesKY-91
CrossesUnname Stream
Location1.4 MI N.W. of JCT Ky 168
RouteState Highway 91
CountyChristian County
StateKentucky
Coordinates36.89889, -87.54222
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionJune 2022
Inspection intervalevery 48 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.6 US tons
Inventory rating37 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length33 ft (10.1 m)
Longest span30 ft (9.1 m)
Deck width26 ft (8 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,948 (2020)
Projected traffic3,948 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$105,000
NavigationNo navigation control on waterway

Frequently asked questions

When was KY-91 over Unname Stream built?

It was built in 1932, making it 93 years old in 2025.

What condition is KY-91 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-91 over Unname Stream carry?

About 3,948 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is KY-91 over Unname Stream?

The structure is 33 ft (10.1 m) long with a longest span of 30 ft (9.1 m) and a deck 26 ft wide.

Who owns KY-91 over Unname Stream?

It is owned by the State Highway Agency.