US Bridges

US-421 over Muncy Creek

Fair

Leslie County, Kentucky · 2.0 MI Nor. of JCT Ky 406 · Structure no. 066B00007N

Built
1938
87 years old
Condition
Fair
inspected December 2023
Type
Culvert
Concrete
Length
27 ft
2 main spans
Daily traffic
2,823
2022 count
Owner
State
State Highway Agency

About this bridge

US-421 over Muncy Creek is a concrete culvert carrying US-421 over Muncy Creek in Leslie County, Kentucky. It was built in 1938, so it is 87 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 2,823 vehicles a day, roughly 11% of them trucks, projected to reach 2,823 by 2042. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 72.1 mi (116 km).

Location

Open in Google Maps
CarriesUS-421
CrossesMuncy Creek
Location2.0 MI Nor. of JCT Ky 406
RouteU.S. Route 421
CountyLeslie County
StateKentucky
Coordinates37.11278, -83.38056
Functional classRural Minor Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating80.4 US tons
Inventory rating48.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 15
Structure length27 ft (8.2 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,823 (2022)
Projected traffic2,823 by 2042
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed72.1 mi (116 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 US-421 over Muncy Creek built?

It was built in 1938, making it 87 years old in 2025.

What condition is US-421 over Muncy 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 December 2023.

How much traffic does US-421 over Muncy Creek carry?

About 2,823 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is US-421 over Muncy Creek?

The structure is 27 ft (8.2 m) long with a longest span of 8 ft (2.4 m).

Who owns US-421 over Muncy Creek?

It is owned by the State Highway Agency.