US Bridges

Woolper RD over Ashbys Fork

FairPosted for load

Boone County, Kentucky · 3.3 MI NW of JCT Ky 18 · Structure no. 008C00023N

Built
1970
55 years old
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
31 ft
1 main span
Daily traffic
422
2006 count
Owner
County
County Highway Agency

About this bridge

Woolper RD over Ashbys Fork is a prestressed concrete box beam or girders - multiple carrying Woolper RD over Ashbys Fork in Boone 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. Its operating status is: posted for load restriction.

It carries about 422 vehicles a day, projected to reach 729 by 2026. The structure is 31 ft (9.4 m) long and 21 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

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CarriesWoolper RD
CrossesAshbys Fork
Location3.3 MI NW of JCT Ky 18
RouteCounty Highway 1328
CountyBoone County
StateKentucky
Coordinates39.03861, -84.815
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
Deck7 GoodSome minor problems.
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load 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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating52.8 US tons
Inventory rating31.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length31 ft (9.4 m)
Longest span29 ft (8.8 m)
Deck width21 ft (6.4 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic422 (2006)
Projected traffic729 by 2026
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$82,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Woolper RD over Ashbys Fork built?

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

What condition is Woolper RD over Ashbys 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 September 2024.

How much traffic does Woolper RD over Ashbys Fork carry?

About 422 vehicles per day (2006 count).

How long is Woolper RD over Ashbys Fork?

The structure is 31 ft (9.4 m) long with a longest span of 29 ft (8.8 m) and a deck 21 ft wide.

Who owns Woolper RD over Ashbys Fork?

It is owned by the County Highway Agency.