US Bridges

KY-908 over Blacklog Fork

Fair

Martin County, Kentucky · 100 S of JCT Ky 40 · Structure no. 080B00026N

Built
1987
38 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete
Length
29 ft
2 main spans
Daily traffic
3,852
2021 count
Owner
State
State Highway Agency

About this bridge

KY-908 over Blacklog Fork is a concrete culvert carrying KY-908 over Blacklog Fork 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 3,852 vehicles a day, roughly 5% of them trucks, projected to reach 3,852 by 2041. The structure is 29 ft (8.8 m) long and 66 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesKY-908
CrossesBlacklog Fork
Location100 S of JCT Ky 40
RouteState Highway 908
CountyMartin County
StateKentucky
Coordinates37.85611, -82.51917
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating44 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length29 ft (8.8 m)
Longest span14 ft (4.3 m)
Deck width66 ft (20.1 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,852 (2021)
Projected traffic3,852 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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-908 over Blacklog Fork built?

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

What condition is KY-908 over Blacklog 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 August 2023.

How much traffic does KY-908 over Blacklog Fork carry?

About 3,852 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is KY-908 over Blacklog Fork?

The structure is 29 ft (8.8 m) long with a longest span of 14 ft (4.3 m) and a deck 66 ft wide.

Who owns KY-908 over Blacklog Fork?

It is owned by the State Highway Agency.