US Bridges

KY-40 over State Road Fork

Fair

Magoffin County, Kentucky · 1.22 MI W Ky 1081 · Structure no. 077B00074N

Built
1989
36 years old
Condition
Fair
inspected January 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
36 ft
1 main span
Daily traffic
1,012
2023 count
Owner
State
State Highway Agency

About this bridge

KY-40 over State Road Fork is a prestressed concrete box beam or girders - multiple carrying KY-40 over State Road Fork in Magoffin County, Kentucky. It was built in 1989, so it is 36 years old, younger 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 1,012 vehicles a day, roughly 2% of them trucks, projected to reach 1,012 by 2043. The structure is 36 ft (11 m) long and 36 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesKY-40
CrossesState Road Fork
Location1.22 MI W Ky 1081
RouteState Highway 40
CountyMagoffin County
StateKentucky
Coordinates37.77889, -83.02139
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
Deck8 Very GoodNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating95.5 US tons
Inventory rating57.3 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length36 ft (11 m)
Longest span34 ft (10.4 m)
Deck width36 ft (11 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,012 (2023)
Projected traffic1,012 by 2043
Trucks2%
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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was KY-40 over State Road Fork built?

It was built in 1989, making it 36 years old in 2025.

What condition is KY-40 over State Road 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 January 2023.

How much traffic does KY-40 over State Road Fork carry?

About 1,012 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is KY-40 over State Road Fork?

The structure is 36 ft (11 m) long with a longest span of 34 ft (10.4 m) and a deck 36 ft wide.

Who owns KY-40 over State Road Fork?

It is owned by the State Highway Agency.