US Bridges

KY-3 over Middle Fork-Rockcastle C

Fair

Martin County, Kentucky · 50 N Ky 645 · Structure no. 080B00035N

Built
1985
40 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
100 ft
1 main span
Daily traffic
1,264
2021 count
Owner
State
State Highway Agency

About this bridge

KY-3 over Middle Fork-Rockcastle C is a prestressed concrete stringer/multi-beam or girder carrying KY-3 over Middle Fork-Rockcastle C in Martin 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 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 1,264 vehicles a day, roughly 3% of them trucks, projected to reach 1,264 by 2041. The structure is 100 ft (30.5 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesKY-3
CrossesMiddle Fork-Rockcastle C
Location50 N Ky 645
RouteState Highway 3
CountyMartin County
StateKentucky
Coordinates37.85222, -82.54611
Functional classRural Major 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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
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 geometry8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.1 US tons
Inventory rating48.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span95 ft (29 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,264 (2021)
Projected traffic1,264 by 2041
Trucks3%
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-3 over Middle Fork-Rockcastle C built?

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

What condition is KY-3 over Middle Fork-Rockcastle C 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 over Middle Fork-Rockcastle C carry?

About 1,264 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is KY-3 over Middle Fork-Rockcastle C?

The structure is 100 ft (30.5 m) long with a longest span of 95 ft (29 m) and a deck 47 ft wide.

Who owns KY-3 over Middle Fork-Rockcastle C?

It is owned by the State Highway Agency.