US Bridges

KY-412 over Rolling Fork River

Good

Marion County, Kentucky · 2.033 M E JCT 412 & 84 · Structure no. 078B00077N

Built
1985
40 years old
Condition
Good
inspected January 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
221 ft
3 main spans
Daily traffic
764
2023 count
Owner
State
State Highway Agency

About this bridge

KY-412 over Rolling Fork River is a prestressed concrete continuous stringer/multi-beam or girder carrying KY-412 over Rolling Fork River in Marion County, Kentucky. It was built in 1985, so it is 40 years old, younger 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 764 vehicles a day, projected to reach 764 by 2043. The structure is 221 ft (67.4 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesKY-412
CrossesRolling Fork River
Location2.033 M E JCT 412 & 84
RouteState Highway 412
CountyMarion County
StateKentucky
Coordinates37.53833, -85.38056
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating83.2 US tons
Inventory rating49.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length221 ft (67.4 m)
Longest span100 ft (30.5 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic764 (2023)
Projected traffic764 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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-412 over Rolling Fork River built?

It was built in 1985, making it 40 years old in 2025.

What condition is KY-412 over Rolling Fork River 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 January 2023.

How much traffic does KY-412 over Rolling Fork River carry?

About 764 vehicles per day (2023 count).

How long is KY-412 over Rolling Fork River?

The structure is 221 ft (67.4 m) long with a longest span of 100 ft (30.5 m) and a deck 31 ft wide.

Who owns KY-412 over Rolling Fork River?

It is owned by the State Highway Agency.