US Bridges

Ky 12 over Flat Creek

Fair

Franklin County, Kentucky · 6.2 MI E of US 421 · Structure no. 037B00103N

Built
2007
18 years old
Condition
Fair
inspected July 2022
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
98 ft
1 main span
Daily traffic
212
2021 count
Owner
State
State Highway Agency

About this bridge

Ky 12 over Flat Creek is a prestressed concrete box beam or girders - multiple carrying Ky 12 over Flat Creek in Franklin County, Kentucky. It was built in 2007, so it is 18 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 212 vehicles a day, projected to reach 212 by 2041. The structure is 98 ft (29.9 m) long and 20 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

Location

Open in Google Maps
CarriesKy 12
CrossesFlat Creek
Location6.2 MI E of US 421
RouteState Highway 12
CountyFranklin County
StateKentucky
Coordinates38.31694, -84.90028
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating100.5 US tons
Inventory rating60.3 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length98 ft (29.9 m)
Longest span96 ft (29.4 m)
Deck width20 ft (6.1 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic212 (2021)
Projected traffic212 by 2041
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 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 12 over Flat Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is Ky 12 over Flat Creek 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 2022.

How much traffic does Ky 12 over Flat Creek carry?

About 212 vehicles per day (2021 count).

How long is Ky 12 over Flat Creek?

The structure is 98 ft (29.9 m) long with a longest span of 96 ft (29.4 m) and a deck 20 ft wide.

Who owns Ky 12 over Flat Creek?

It is owned by the State Highway Agency.