US Bridges

KY-687 over S.Fk.Rockcastle Rvr

FairPosted for load

Laurel County, Kentucky · On Clay - Laurel Cl · Structure no. 063B00046N

Built
1955
70 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete
Length
41 ft
2 main spans
Daily traffic
182
2022 count
Owner
State
State Highway Agency

About this bridge

KY-687 over S.Fk.Rockcastle Rvr is a concrete culvert carrying KY-687 over S.Fk.Rockcastle Rvr in Laurel County, Kentucky. It was built in 1955, so it is 70 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. Its operating status is: posted for load restriction.

It carries about 182 vehicles a day, projected to reach 182 by 2042. The structure is 41 ft (12.5 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesKY-687
CrossesS.Fk.Rockcastle Rvr
LocationOn Clay - Laurel Cl
RouteState Highway 687
CountyLaurel County
StateKentucky
Coordinates37.17, -83.96944
Functional classRural Minor 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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating36.7 US tons
Inventory rating22 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length41 ft (12.5 m)
Longest span20 ft (6 m)
Deck width29 ft (8.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic182 (2022)
Projected traffic182 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was KY-687 over S.Fk.Rockcastle Rvr built?

It was built in 1955, making it 70 years old in 2025.

What condition is KY-687 over S.Fk.Rockcastle Rvr 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 2024.

How much traffic does KY-687 over S.Fk.Rockcastle Rvr carry?

About 182 vehicles per day (2022 count).

How long is KY-687 over S.Fk.Rockcastle Rvr?

The structure is 41 ft (12.5 m) long with a longest span of 20 ft (6 m) and a deck 29 ft wide.

Who owns KY-687 over S.Fk.Rockcastle Rvr?

It is owned by the State Highway Agency.