US Bridges

KY-1437 over Big Mine Fork

Fair

Magoffin County, Kentucky · @ Ky. 1081 Jct. · Structure no. 077B00078N

Built
1998
27 years old
Condition
Fair
inspected January 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
41 ft
1 main span
Daily traffic
438
2021 count
Owner
State
State Highway Agency

About this bridge

KY-1437 over Big Mine Fork is a prestressed concrete box beam or girders - single or spread carrying KY-1437 over Big Mine Fork in Magoffin County, Kentucky. It was built in 1998, so it is 27 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 438 vehicles a day, projected to reach 438 by 2041. The structure is 41 ft (12.5 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesKY-1437
CrossesBig Mine Fork
Location@ Ky. 1081 Jct.
RouteState Highway 1437
CountyMagoffin County
StateKentucky
Coordinates37.82667, -83.01083
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 alignment8: Equal to present desirable criteria
Operating rating92.9 US tons
Inventory rating55.8 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length41 ft (12.5 m)
Longest span39 ft (12 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic438 (2021)
Projected traffic438 by 2041
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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-1437 over Big Mine Fork built?

It was built in 1998, making it 27 years old in 2025.

What condition is KY-1437 over Big Mine 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-1437 over Big Mine Fork carry?

About 438 vehicles per day (2021 count).

How long is KY-1437 over Big Mine Fork?

The structure is 41 ft (12.5 m) long with a longest span of 39 ft (12 m) and a deck 31 ft wide.

Who owns KY-1437 over Big Mine Fork?

It is owned by the State Highway Agency.