US Bridges

KY-3 Nc over Middle Frk Rockcastle Ck

Fair

Martin County, Kentucky · 0.3 MI S of Ky 645 · Structure no. 080B00023L

Built
1987
38 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
161 ft
3 main spans
Daily traffic
1,527
2021 count
Owner
State
State Highway Agency

About this bridge

KY-3 Nc over Middle Frk Rockcastle Ck is a prestressed concrete continuous stringer/multi-beam or girder carrying KY-3 Nc over Middle Frk Rockcastle Ck in Martin County, Kentucky. It was built in 1987, so it is 38 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 1,527 vehicles a day, roughly 9% of them trucks, projected to reach 1,527 by 2041. The structure is 161 ft (49.1 m) long and 47 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

Open in Google Maps
CarriesKY-3 Nc
CrossesMiddle Frk Rockcastle Ck
Location0.3 MI S of Ky 645
RouteState Highway 3
CountyMartin County
StateKentucky
Coordinates37.84528, -82.54361
Functional classRural Minor Arterial

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating95.1 US tons
Inventory rating57.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length161 ft (49.1 m)
Longest span60 ft (18.3 m)
Deck width47 ft (14.4 m)
Roadway width46 ft (13.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,527 (2021)
Projected traffic1,527 by 2041
Trucks9%
Lanes on structure2
Traffic directionOne-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 Nc over Middle Frk Rockcastle Ck built?

It was built in 1987, making it 38 years old in 2025.

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

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

About 1,527 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is KY-3 Nc over Middle Frk Rockcastle Ck?

The structure is 161 ft (49.1 m) long with a longest span of 60 ft (18.3 m) and a deck 47 ft wide.

Who owns KY-3 Nc over Middle Frk Rockcastle Ck?

It is owned by the State Highway Agency.