US Bridges

KY-768 over Big Creek

Good

Adair County, Kentucky · .5 MI SW of JCT Ky 959 · Structure no. 001B00048N

Built
1972
53 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
155 ft
3 main spans
Daily traffic
727
2021 count
Owner
State
State Highway Agency

About this bridge

KY-768 over Big Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying KY-768 over Big Creek in Adair County, Kentucky. It was built in 1972, so it is 53 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.

It carries about 727 vehicles a day, projected to reach 727 by 2041. The structure is 155 ft (47.2 m) long and 22 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesKY-768
CrossesBig Creek
Location.5 MI SW of JCT Ky 959
RouteState Highway 768
CountyAdair County
StateKentucky
Coordinates37.11694, -85.41667
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.4 US tons
Inventory rating32 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length155 ft (47.2 m)
Longest span70 ft (21.3 m)
Deck width22 ft (6.6 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic727 (2021)
Projected traffic727 by 2041
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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$382,000
NavigationNo navigation control on waterway

Frequently asked questions

When was KY-768 over Big Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is KY-768 over Big Creek 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 July 2023.

How much traffic does KY-768 over Big Creek carry?

About 727 vehicles per day (2021 count).

How long is KY-768 over Big Creek?

The structure is 155 ft (47.2 m) long with a longest span of 70 ft (21.3 m) and a deck 22 ft wide.

Who owns KY-768 over Big Creek?

It is owned by the State Highway Agency.