US Bridges

US-431 over Green River & Rough Rive

FairPosted for load

McLean County, Kentucky · .50 MI Sou. of JCT Ky 136 · Structure no. 075B00018N

Built
1939
86 years old
Condition
Fair
inspected May 2024
Type
Truss - Thru
Steel
Length
1,644 ft
1 main span
Daily traffic
5,663
2020 count
Owner
State
State Highway Agency

About this bridge

US-431 over Green River & Rough Rive is a steel truss - thru carrying US-431 over Green River & Rough Rive in McLean County, Kentucky. It was built in 1939, so it is 86 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. Its operating status is: posted for load restriction.

It carries about 5,663 vehicles a day, roughly 17% of them trucks, projected to reach 5,663 by 2040. The structure is 1,644 ft (501.1 m) long and 27 ft wide. If it were closed, the detour would be 17.4 mi (28 km).

Location

Open in Google Maps
CarriesUS-431
CrossesGreen River & Rough Rive
Location.50 MI Sou. of JCT Ky 136
RouteU.S. Route 431
CountyMcLean County
StateKentucky
Coordinates37.48417, -87.13472
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.1 US tons
Inventory rating22.8 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+16 approach)
Design loadH 20
Structure length1,644 ft (501.1 m)
Longest span320 ft (97.5 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck18 ft (5.4 m)

Traffic and service

Average daily traffic5,663 (2020)
Projected traffic5,663 by 2040
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed17.4 mi (28 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$6.7 million
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was US-431 over Green River & Rough Rive built?

It was built in 1939, making it 86 years old in 2025.

What condition is US-431 over Green River & Rough Rive 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 US-431 over Green River & Rough Rive carry?

About 5,663 vehicles per day (2020 count), of which roughly 17% are trucks.

How long is US-431 over Green River & Rough Rive?

The structure is 1,644 ft (501.1 m) long with a longest span of 320 ft (97.5 m) and a deck 27 ft wide.

Who owns US-431 over Green River & Rough Rive?

It is owned by the State Highway Agency.