US Bridges

LN-9008 over Conover RD

Fair

Adair County, Kentucky · 1.4 MI E of Ky 55 Ntrch · Structure no. 001B00064N

Built
1971
54 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
27 ft
1 main span
Daily traffic
7,716
2022 count
Owner
State
State Highway Agency

About this bridge

LN-9008 over Conover RD is a concrete culvert carrying LN-9008 over Conover RD in Adair County, Kentucky. It was built in 1971, so it is 54 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 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 7,716 vehicles a day, roughly 25% of them trucks, projected to reach 7,716 by 2042. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLN-9008
CrossesConover RD
Location1.4 MI E of Ky 55 Ntrch
RouteState Highway 9008
Coordinates37.08917, -85.27806
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to 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 spans1
Design loadUnknown
Structure length27 ft (8.2 m)
Longest span24 ft (7.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,716 (2022)
Projected traffic7,716 by 2042
Trucks25%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was LN-9008 over Conover RD built?

It was built in 1971, making it 54 years old in 2025.

What condition is LN-9008 over Conover RD 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 July 2023.

How much traffic does LN-9008 over Conover RD carry?

About 7,716 vehicles per day (2022 count), of which roughly 25% are trucks.

How long is LN-9008 over Conover RD?

The structure is 27 ft (8.2 m) long with a longest span of 24 ft (7.3 m).

Who owns LN-9008 over Conover RD?

It is owned by the State Highway Agency.