US Bridges

KY1780 over Salt Trace Branch

Fair

Harlan County, Kentucky · 1 MI W JCT Ky 221 · Structure no. 048B00201N

Built
2009
16 years old
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
36 ft
1 main span
Daily traffic
153
2022 count
Owner
State
State Highway Agency

About this bridge

KY1780 over Salt Trace Branch is a prestressed concrete box beam or girders - multiple carrying KY1780 over Salt Trace Branch in Harlan County, Kentucky. It was built in 2009, so it is 16 years old, younger 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 153 vehicles a day, projected to reach 153 by 2042. The structure is 36 ft (11 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesKY1780
CrossesSalt Trace Branch
Location1 MI W JCT Ky 221
RouteState Highway 1780
CountyHarlan County
StateKentucky
Coordinates36.8725, -83.46583
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.4 US tons
Inventory rating50 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length36 ft (11 m)
Longest span34 ft (10.5 m)
Deck width24 ft (7.2 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic153 (2022)
Projected traffic153 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 KY1780 over Salt Trace Branch built?

It was built in 2009, making it 16 years old in 2025.

What condition is KY1780 over Salt Trace 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 July 2023.

How much traffic does KY1780 over Salt Trace Branch carry?

About 153 vehicles per day (2022 count).

How long is KY1780 over Salt Trace Branch?

The structure is 36 ft (11 m) long with a longest span of 34 ft (10.5 m) and a deck 24 ft wide.

Who owns KY1780 over Salt Trace Branch?

It is owned by the State Highway Agency.