US Bridges

KY-1081 over Big Mine Fork

Fair

Magoffin County, Kentucky · .05 MI SW of JCT Ky 1437 · Structure no. 077B00022N

Built
1935
90 years old
Condition
Fair
inspected January 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
38 ft
1 main span
Daily traffic
627
2022 count
Owner
State
State Highway Agency

About this bridge

KY-1081 over Big Mine Fork is a prestressed concrete box beam or girders - multiple carrying KY-1081 over Big Mine Fork in Magoffin 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 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 627 vehicles a day, roughly 1% of them trucks, projected to reach 627 by 2042. The structure is 38 ft (11.6 m) long and 21 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesKY-1081
CrossesBig Mine Fork
Location.05 MI SW of JCT Ky 1437
RouteState Highway 1081
CountyMagoffin County
StateKentucky
Coordinates37.82667, -83.01111
Functional classRural Minor 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJanuary 2023
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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating86.1 US tons
Inventory rating51.6 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 10
Structure length38 ft (11.6 m)
Longest span34 ft (10.5 m)
Deck width21 ft (6.4 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic627 (2022)
Projected traffic627 by 2042
Trucks1%
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$99,000
NavigationNo navigation control on waterway

Frequently asked questions

When was KY-1081 over Big Mine Fork built?

It was built in 1935, making it 90 years old in 2025.

What condition is KY-1081 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-1081 over Big Mine Fork carry?

About 627 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is KY-1081 over Big Mine Fork?

The structure is 38 ft (11.6 m) long with a longest span of 34 ft (10.5 m) and a deck 21 ft wide.

Who owns KY-1081 over Big Mine Fork?

It is owned by the State Highway Agency.