US Bridges

Cornett RD over Big Branch

Fair

Knott County, Kentucky · 0.1 MI S of JCT Ky 1231 · Structure no. 060C00045N

Built
1949
76 years old
Condition
Fair
inspected June 2022
Type
Culvert
Concrete
Length
44 ft
2 main spans
Daily traffic
215
2010 count
Owner
County
County Highway Agency

About this bridge

Cornett RD over Big Branch is a concrete culvert carrying Cornett RD over Big Branch in Knott County, Kentucky. It was built in 1949, so it is 76 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 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 215 vehicles a day, projected to reach 215 by 2030. The structure is 44 ft (13.4 m) long. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesCornett RD
CrossesBig Branch
Location0.1 MI S of JCT Ky 1231
RouteCounty Highway 1261
CountyKnott County
StateKentucky
Coordinates37.31694, -83.00944
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating60 US tons
Inventory rating44 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length44 ft (13.4 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic215 (2010)
Projected traffic215 by 2030
Trucks0%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Cornett RD over Big Branch built?

It was built in 1949, making it 76 years old in 2025.

What condition is Cornett RD over Big Branch 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 June 2022.

How much traffic does Cornett RD over Big Branch carry?

About 215 vehicles per day (2010 count).

How long is Cornett RD over Big Branch?

The structure is 44 ft (13.4 m) long with a longest span of 20 ft (6.1 m).

Who owns Cornett RD over Big Branch?

It is owned by the County Highway Agency.