US Bridges

US 431 over Unnamed Stream

Fair

Logan County, Kentucky · .45 MI N. of Jct. W/KY106 · Structure no. 071B00104N

Built
1929
96 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
2,748
2021 count
Owner
State
State Highway Agency

About this bridge

US 431 over Unnamed Stream is a concrete culvert carrying US 431 over Unnamed Stream in Logan County, Kentucky. It was built in 1929, so it is 96 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 2,748 vehicles a day, roughly 13% of them trucks, projected to reach 2,748 by 2041. The structure is 24 ft (7.3 m) long.

Location

Open in Google Maps
CarriesUS 431
CrossesUnnamed Stream
Location.45 MI N. of Jct. W/KY106
RouteU.S. Route 431
CountyLogan County
StateKentucky
Coordinates36.9925, -86.955
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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating44 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 15
Structure length24 ft (7.3 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,748 (2021)
Projected traffic2,748 by 2041
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Unnamed Stream built?

It was built in 1929, making it 96 years old in 2025.

What condition is US 431 over Unnamed Stream 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 November 2023.

How much traffic does US 431 over Unnamed Stream carry?

About 2,748 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is US 431 over Unnamed Stream?

The structure is 24 ft (7.3 m) long with a longest span of 11 ft (3.4 m).

Who owns US 431 over Unnamed Stream?

It is owned by the State Highway Agency.