US Bridges

Dobson Drive over Balls Fork

Good

Knott County, Kentucky · 0.01 MI SE of KY-1087 · Structure no. 060C00120N

Built
2023
2 years old
Condition
Good
inspected November 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
84 ft
1 main span
Daily traffic
20
2024 count
Owner
County
County Highway Agency

About this bridge

Dobson Drive over Balls Fork is a prestressed concrete box beam or girders - multiple carrying Dobson Drive over Balls Fork in Knott County, Kentucky. It was built in 2023, so it is 2 years old, younger than the Kentucky average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 20 vehicles a day, projected to reach 24 by 2044. The structure is 84 ft (25.5 m) long and 12 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesDobson Drive
CrossesBalls Fork
Location0.01 MI SE of KY-1087
RouteCounty Highway 1387
CountyKnott County
StateKentucky
Coordinates37.39972, -83.05222
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.1 US tons
Inventory rating48.6 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length84 ft (25.5 m)
Longest span82 ft (25 m)
Deck width12 ft (3.7 m)
Roadway width11 ft (3.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2024)
Projected traffic24 by 2044
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Dobson Drive over Balls Fork built?

It was built in 2023, making it 2 years old in 2025.

What condition is Dobson Drive over Balls Fork in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does Dobson Drive over Balls Fork carry?

About 20 vehicles per day (2024 count).

How long is Dobson Drive over Balls Fork?

The structure is 84 ft (25.5 m) long with a longest span of 82 ft (25 m) and a deck 12 ft wide.

Who owns Dobson Drive over Balls Fork?

It is owned by the County Highway Agency.