US Bridges

KY-91 over Muddy Fork

Fair

Christian County, Kentucky · .40 MI S.E. of JCT Ky 398 · Structure no. 024B00051N

Built
1931
94 years old
Condition
Fair
inspected June 2024
Type
Tee Beam
Concrete
Length
86 ft
2 main spans
Daily traffic
1,631
2023 count
Owner
State
State Highway Agency

About this bridge

KY-91 over Muddy Fork is a concrete tee beam carrying KY-91 over Muddy Fork in Christian County, Kentucky. It was built in 1931, so it is 94 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 1,631 vehicles a day, roughly 7% of them trucks, projected to reach 1,631 by 2043. The structure is 86 ft (26.2 m) long and 26 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesKY-91
CrossesMuddy Fork
Location.40 MI S.E. of JCT Ky 398
RouteState Highway 91
CountyChristian County
StateKentucky
Coordinates36.98611, -87.66139
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 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.1 US tons
Inventory rating34.3 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length86 ft (26.2 m)
Longest span40 ft (12.2 m)
Deck width26 ft (8 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,631 (2023)
Projected traffic1,631 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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$274,000
NavigationNo navigation control on waterway

Frequently asked questions

When was KY-91 over Muddy Fork built?

It was built in 1931, making it 94 years old in 2025.

What condition is KY-91 over Muddy Fork 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 2024.

How much traffic does KY-91 over Muddy Fork carry?

About 1,631 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is KY-91 over Muddy Fork?

The structure is 86 ft (26.2 m) long with a longest span of 40 ft (12.2 m) and a deck 26 ft wide.

Who owns KY-91 over Muddy Fork?

It is owned by the State Highway Agency.