US Bridges

KY-690 over Muddy Prong

Good

Breckinridge County, Kentucky · 1.2 MI W-CR5170@FAIRFIELD · Structure no. 014B00043N

Built
1955
70 years old
Condition
Good
inspected September 2021
Type
Culvert
Concrete
Length
45 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 290 vehicles a day, projected to reach 290 by 2043. The structure is 45 ft (13.7 m) long and 21 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesKY-690
CrossesMuddy Prong
Location1.2 MI W-CR5170@FAIRFIELD
RouteState Highway 690
CountyBreckinridge County
StateKentucky
Coordinates37.66806, -86.30861
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating60 US tons
Inventory rating45 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 15
Structure length45 ft (13.7 m)
Longest span14 ft (4.3 m)
Deck width21 ft (6.4 m)
Roadway width16 ft (4.9 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 closed8.1 mi (13 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 good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2021.

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 45 ft (13.7 m) long with a longest span of 14 ft (4.3 m) and a deck 21 ft wide.

Who owns KY-690 over Muddy Prong?

It is owned by the State Highway Agency.