US Bridges

KY-499 over Drowning Creek @combs

Fair

Estill County, Kentucky · On Madison - Estill Cl · Structure no. 033B00020N

Built
1971
54 years old, rebuilt 2012
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
120 ft
2 main spans
Daily traffic
390
2022 count
Owner
State
State Highway Agency

About this bridge

KY-499 over Drowning Creek @combs is a prestressed concrete box beam or girders - single or spread carrying KY-499 over Drowning Creek @combs in Estill County, Kentucky. It was built in 1971 and reconstructed in 2012, 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 390 vehicles a day, projected to reach 390 by 2042. The structure is 120 ft (36.6 m) long and 24 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesKY-499
CrossesDrowning Creek @combs
LocationOn Madison - Estill Cl
RouteState Highway 499
CountyEstill County
StateKentucky
Coordinates37.66083, -84.09917
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating80 US tons
Inventory rating61.8 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadGreater than HL 93
Structure length120 ft (36.6 m)
Longest span60 ft (18.3 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic390 (2022)
Projected traffic390 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 KY-499 over Drowning Creek @combs built?

It was built in 1971, making it 54 years old in 2025. It was reconstructed in 2012.

What condition is KY-499 over Drowning Creek @combs 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 May 2024.

How much traffic does KY-499 over Drowning Creek @combs carry?

About 390 vehicles per day (2022 count).

How long is KY-499 over Drowning Creek @combs?

The structure is 120 ft (36.6 m) long with a longest span of 60 ft (18.3 m) and a deck 24 ft wide.

Who owns KY-499 over Drowning Creek @combs?

It is owned by the State Highway Agency.