US Bridges

KY-690 over Muddy Prong

FairPosted for load

Breckinridge County, Kentucky · 2.3 MI S of JCT Ky 1073 · Structure no. 014B00042N

Built
1955
70 years old
Condition
Fair
inspected September 2024
Type
Culvert
Concrete
Length
44 ft
3 main spans
Daily traffic
290
2023 count
Owner
State
State Highway Agency

About this bridge

KY-690 over Muddy Prong is a concrete culvert carrying KY-690 over Muddy Prong in Breckinridge 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 290 vehicles a day, projected to reach 290 by 2043. The structure is 44 ft (13.3 m) long and 27 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesKY-690
CrossesMuddy Prong
Location2.3 MI S of JCT Ky 1073
RouteState Highway 690
CountyBreckinridge County
StateKentucky
Coordinates37.69417, -86.26611
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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.7 US tons
Inventory rating22 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 15
Structure length44 ft (13.3 m)
Longest span14 ft (4.3 m)
Deck width27 ft (8.2 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic290 (2023)
Projected traffic290 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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-690 over Muddy Prong built?

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

What condition is KY-690 over Muddy Prong 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 September 2024.

How much traffic does KY-690 over Muddy Prong carry?

About 290 vehicles per day (2023 count).

How long is KY-690 over Muddy Prong?

The structure is 44 ft (13.3 m) long with a longest span of 14 ft (4.3 m) and a deck 27 ft wide.

Who owns KY-690 over Muddy Prong?

It is owned by the State Highway Agency.