US Bridges

KY-3 over Middle Frk Rockcastle CR

Good

Martin County, Kentucky · 4.5 MI S of JCT KY-645 · Structure no. 080B00033N

Built
1991
34 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
183 ft
3 main spans
Daily traffic
2,742
2021 count
Owner
State
State Highway Agency

About this bridge

KY-3 over Middle Frk Rockcastle CR is a prestressed concrete continuous stringer/multi-beam or girder carrying KY-3 over Middle Frk Rockcastle CR in Martin County, Kentucky. It was built in 1991, so it is 34 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 2,742 vehicles a day, roughly 9% of them trucks, projected to reach 2,742 by 2041. The structure is 183 ft (55.8 m) long and 85 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

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CarriesKY-3
CrossesMiddle Frk Rockcastle CR
Location4.5 MI S of JCT KY-645
RouteState Highway 3
CountyMartin County
StateKentucky
Coordinates37.79667, -82.5725
Functional classRural Minor Arterial

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.9 US tons
Inventory rating37 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length183 ft (55.8 m)
Longest span60 ft (18.3 m)
Deck width85 ft (26 m)
Roadway width82 ft (25 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,742 (2021)
Projected traffic2,742 by 2041
Trucks9%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 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-3 over Middle Frk Rockcastle CR built?

It was built in 1991, making it 34 years old in 2025.

What condition is KY-3 over Middle Frk Rockcastle CR 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 August 2023.

How much traffic does KY-3 over Middle Frk Rockcastle CR carry?

About 2,742 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is KY-3 over Middle Frk Rockcastle CR?

The structure is 183 ft (55.8 m) long with a longest span of 60 ft (18.3 m) and a deck 85 ft wide.

Who owns KY-3 over Middle Frk Rockcastle CR?

It is owned by the State Highway Agency.