US Bridges

KY-378 over Negro Branch

GoodPosted for load

Breathitt County, Kentucky · 1.2 MI East of JCT Ky 394 · Structure no. 013B00049N

Built
1953
72 years old
Condition
Good
inspected February 2024
Type
Culvert
Concrete
Length
27 ft
2 main spans
Daily traffic
180
2022 count
Owner
State
State Highway Agency

About this bridge

KY-378 over Negro Branch is a concrete culvert carrying KY-378 over Negro Branch in Breathitt County, Kentucky. It was built in 1953, so it is 72 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 180 vehicles a day, projected to reach 180 by 2042. The structure is 27 ft (8.2 m) long and 24 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesKY-378
CrossesNegro Branch
Location1.2 MI East of JCT Ky 394
RouteState Highway 378
CountyBreathitt County
StateKentucky
Coordinates37.64361, -83.33083
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.3 US tons
Inventory rating30.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 15
Structure length27 ft (8.2 m)
Longest span12 ft (3.7 m)
Deck width24 ft (7.3 m)
Roadway width21 ft (6.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic180 (2022)
Projected traffic180 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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-378 over Negro Branch built?

It was built in 1953, making it 72 years old in 2025.

What condition is KY-378 over Negro Branch 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 February 2024.

How much traffic does KY-378 over Negro Branch carry?

About 180 vehicles per day (2022 count).

How long is KY-378 over Negro Branch?

The structure is 27 ft (8.2 m) long with a longest span of 12 ft (3.7 m) and a deck 24 ft wide.

Who owns KY-378 over Negro Branch?

It is owned by the State Highway Agency.