US Bridges

KY-91 over Unname Stream

Fair

Christian County, Kentucky · .20 MI S.E. of JCT Ky 102 · Structure no. 024B00050N

Built
1935
90 years old
Condition
Fair
inspected June 2022
Type
Culvert
Concrete
Length
41 ft
3 main spans
Daily traffic
3,948
2020 count
Owner
State
State Highway Agency

About this bridge

KY-91 over Unname Stream is a concrete culvert carrying KY-91 over Unname Stream in Christian County, Kentucky. It was built in 1935, so it is 90 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 3,948 vehicles a day, roughly 7% of them trucks, projected to reach 3,948 by 2040. The structure is 41 ft (12.5 m) long and 41 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesKY-91
CrossesUnname Stream
Location.20 MI S.E. of JCT Ky 102
RouteState Highway 91
CountyChristian County
StateKentucky
Coordinates36.93194, -87.59806
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 protection6 SatisfactoryStructural elements show some minor deterioration.
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 alignment7: Better than present minimum criteria
Operating rating60 US tons
Inventory rating44 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length41 ft (12.5 m)
Longest span11 ft (3.4 m)
Deck width41 ft (12.5 m)
Roadway width0 ft (0 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 closed11.8 mi (19 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-91 over Unname Stream built?

It was built in 1935, making it 90 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 41 ft (12.5 m) long with a longest span of 11 ft (3.4 m) and a deck 41 ft wide.

Who owns KY-91 over Unname Stream?

It is owned by the State Highway Agency.