US Bridges

KY-1778 over Green River

Fair

Lincoln County, Kentucky · .05 MI S of JCT Ky 698 · Structure no. 069B00071N

Built
1988
37 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
143 ft
3 main spans
Daily traffic
319
2023 count
Owner
State
State Highway Agency

About this bridge

KY-1778 over Green River is a prestressed concrete continuous stringer/multi-beam or girder carrying KY-1778 over Green River in Lincoln County, Kentucky. It was built in 1988, so it is 37 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 319 vehicles a day, projected to reach 319 by 2043. The structure is 143 ft (43.6 m) long and 31 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

Location

Open in Google Maps
CarriesKY-1778
CrossesGreen River
Location.05 MI S of JCT Ky 698
RouteState Highway 1778
CountyLincoln County
StateKentucky
Coordinates37.42222, -84.74972
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating100.5 US tons
Inventory rating60.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length143 ft (43.6 m)
Longest span68 ft (20.7 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic319 (2023)
Projected traffic319 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$559,000
NavigationNo navigation control on waterway

Frequently asked questions

When was KY-1778 over Green River built?

It was built in 1988, making it 37 years old in 2025.

What condition is KY-1778 over 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 November 2023.

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

About 319 vehicles per day (2023 count).

How long is KY-1778 over Green River?

The structure is 143 ft (43.6 m) long with a longest span of 68 ft (20.7 m) and a deck 31 ft wide.

Who owns KY-1778 over Green River?

It is owned by the State Highway Agency.