US Bridges

US-431 over Swamp Opposite L & N.R.R

Fair

McLean County, Kentucky · .90 MI Nor. of JCT Ky 85 · Structure no. 075B00020N

Built
1952
73 years old
Condition
Fair
inspected August 2022
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
4,923
2023 count
Owner
State
State Highway Agency

About this bridge

US-431 over Swamp Opposite L & N.R.R is a concrete culvert carrying US-431 over Swamp Opposite L & N.R.R in McLean County, Kentucky. It was built in 1952, so it is 73 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 4,923 vehicles a day, roughly 17% of them trucks, projected to reach 4,923 by 2043. The structure is 21 ft (6.4 m) long and 41 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

Location

Open in Google Maps
CarriesUS-431
CrossesSwamp Opposite L & N.R.R
Location.90 MI Nor. of JCT Ky 85
RouteU.S. Route 431
CountyMcLean County
StateKentucky
Coordinates37.45944, -87.14083
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.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2022
Inspection intervalevery 48 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating45 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width41 ft (12.5 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,923 (2023)
Projected traffic4,923 by 2043
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 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-431 over Swamp Opposite L & N.R.R built?

It was built in 1952, making it 73 years old in 2025.

What condition is US-431 over Swamp Opposite L & N.R.R 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 August 2022.

How much traffic does US-431 over Swamp Opposite L & N.R.R carry?

About 4,923 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is US-431 over Swamp Opposite L & N.R.R?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 41 ft wide.

Who owns US-431 over Swamp Opposite L & N.R.R?

It is owned by the State Highway Agency.