US Bridges

Blackrock Road over Black Rock Creek

Fair

Carroll County, Kentucky · 300 E of Int Tollroad · Structure no. 021C00022N

Built
1972
53 years old
Condition
Fair
inspected February 2023
Type
Culvert
Steel
Length
31 ft
1 main span
Daily traffic
133
2006 count
Owner
County
County Highway Agency

About this bridge

Blackrock Road over Black Rock Creek is a steel culvert carrying Blackrock Road over Black Rock Creek in Carroll County, Kentucky. It was built in 1972, so it is 53 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 5 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 133 vehicles a day, projected to reach 241 by 2026. The structure is 31 ft (9.5 m) long. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesBlackrock Road
CrossesBlack Rock Creek
Location300 E of Int Tollroad
RouteCounty Highway 1004
CountyCarroll County
StateKentucky
Coordinates38.73917, -85.04833
Functional classRural Local

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.1 US tons
Inventory rating55.7 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadUnknown
Structure length31 ft (9.5 m)
Longest span31 ft (9.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic133 (2006)
Projected traffic241 by 2026
Trucks0%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway and railroad
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Blackrock Road over Black Rock Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is Blackrock Road over Black Rock Creek 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 February 2023.

How much traffic does Blackrock Road over Black Rock Creek carry?

About 133 vehicles per day (2006 count).

How long is Blackrock Road over Black Rock Creek?

The structure is 31 ft (9.5 m) long with a longest span of 31 ft (9.5 m).

Who owns Blackrock Road over Black Rock Creek?

It is owned by the County Highway Agency.