US Bridges

KY-1778 over South Fork Green River

Fair

Lincoln County, Kentucky · 1.5 MI Nor. of JCT Ky 501 · Structure no. 069B00059N

Built
1974
51 years old
Condition
Fair
inspected April 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
48 ft
1 main span
Daily traffic
192
2022 count
Owner
State
State Highway Agency

About this bridge

KY-1778 over South Fork Green River is a prestressed concrete box beam or girders - multiple carrying KY-1778 over South Fork Green River in Lincoln County, Kentucky. It was built in 1974, so it is 51 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.

It carries about 192 vehicles a day, projected to reach 192 by 2042. The structure is 48 ft (14.6 m) long and 24 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesKY-1778
CrossesSouth Fork Green River
Location1.5 MI Nor. of JCT Ky 501
RouteState Highway 1778
CountyLincoln County
StateKentucky
Coordinates37.405, -84.70583
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 alignment6: Equal to present minimum criteria
Operating rating66.1 US tons
Inventory rating39.6 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 20
Structure length48 ft (14.6 m)
Longest span45 ft (13.7 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic192 (2022)
Projected traffic192 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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-1778 over South Fork Green River built?

It was built in 1974, making it 51 years old in 2025.

What condition is KY-1778 over South Fork Green River 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 April 2024.

How much traffic does KY-1778 over South Fork Green River carry?

About 192 vehicles per day (2022 count).

How long is KY-1778 over South Fork Green River?

The structure is 48 ft (14.6 m) long with a longest span of 45 ft (13.7 m) and a deck 24 ft wide.

Who owns KY-1778 over South Fork Green River?

It is owned by the State Highway Agency.