US Bridges

KY-37 over North Rolling Fork

FairPosted for load

Boyle County, Kentucky · 1.3 MI E of JCT Ky 1108 · Structure no. 011B00023N

Built
1969
56 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
146 ft
3 main spans
Daily traffic
248
2023 count
Owner
State
State Highway Agency

About this bridge

KY-37 over North Rolling Fork is a prestressed concrete stringer/multi-beam or girder carrying KY-37 over North Rolling Fork in Boyle County, Kentucky. It was built in 1969, so it is 56 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. Its operating status is: posted for load restriction.

It carries about 248 vehicles a day, projected to reach 248 by 2043. The structure is 146 ft (44.5 m) long and 31 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesKY-37
CrossesNorth Rolling Fork
Location1.3 MI E of JCT Ky 1108
RouteState Highway 37
CountyBoyle County
StateKentucky
Coordinates37.55417, -84.93778
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating51.5 US tons
Inventory rating30.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length146 ft (44.5 m)
Longest span53 ft (16.2 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic248 (2023)
Projected traffic248 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was KY-37 over North Rolling Fork built?

It was built in 1969, making it 56 years old in 2025.

What condition is KY-37 over North Rolling Fork 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 October 2024.

How much traffic does KY-37 over North Rolling Fork carry?

About 248 vehicles per day (2023 count).

How long is KY-37 over North Rolling Fork?

The structure is 146 ft (44.5 m) long with a longest span of 53 ft (16.2 m) and a deck 31 ft wide.

Who owns KY-37 over North Rolling Fork?

It is owned by the State Highway Agency.