US Bridges

KY-799 over Island Fork

Fair

Rowan County, Kentucky · 3.3 MI Nor. of JCT Ky 377 · Structure no. 103B00058N

Built
1970
55 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
45 ft
1 main span
Daily traffic
531
2023 count
Owner
State
State Highway Agency

About this bridge

KY-799 over Island Fork is a prestressed concrete box beam or girders - multiple carrying KY-799 over Island Fork in Rowan County, Kentucky. It was built in 1970, so it is 55 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 5 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 531 vehicles a day, projected to reach 531 by 2043. The structure is 45 ft (13.7 m) long and 24 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesKY-799
CrossesIsland Fork
Location3.3 MI Nor. of JCT Ky 377
RouteState Highway 799
CountyRowan County
StateKentucky
Coordinates38.315, -83.44222
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.2 US tons
Inventory rating36 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 20
Structure length45 ft (13.7 m)
Longest span42 ft (12.8 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic531 (2023)
Projected traffic531 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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-799 over Island Fork built?

It was built in 1970, making it 55 years old in 2025.

What condition is KY-799 over Island 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 May 2024.

How much traffic does KY-799 over Island Fork carry?

About 531 vehicles per day (2023 count).

How long is KY-799 over Island Fork?

The structure is 45 ft (13.7 m) long with a longest span of 42 ft (12.8 m) and a deck 24 ft wide.

Who owns KY-799 over Island Fork?

It is owned by the State Highway Agency.