US Bridges

US-431 over Unnamed Stream to Green

Fair

McLean County, Kentucky · .25 MI N of JCT Ky 1412 · Structure no. 075B00021N

Built
1952
73 years old
Condition
Fair
inspected August 2024
Type
Tee Beam
Concrete
Length
330 ft
10 main spans
Daily traffic
5,271
2019 count
Owner
State
State Highway Agency

About this bridge

US-431 over Unnamed Stream to Green is a concrete tee beam carrying US-431 over Unnamed Stream to Green 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 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 5,271 vehicles a day, roughly 17% of them trucks, projected to reach 5,271 by 2039. The structure is 330 ft (100.6 m) long and 30 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

Location

Open in Google Maps
CarriesUS-431
CrossesUnnamed Stream to Green
Location.25 MI N of JCT Ky 1412
RouteU.S. Route 431
CountyMcLean County
StateKentucky
Coordinates37.47611, -87.13806
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
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
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.5 US tons
Inventory rating40.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans10
Design loadH 20
Structure length330 ft (100.6 m)
Longest span31 ft (9.3 m)
Deck width30 ft (9.2 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,271 (2019)
Projected traffic5,271 by 2039
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$1.2 million
NavigationNo navigation control on waterway

Frequently asked questions

When was US-431 over Unnamed Stream to Green built?

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

What condition is US-431 over Unnamed Stream to Green 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 2024.

How much traffic does US-431 over Unnamed Stream to Green carry?

About 5,271 vehicles per day (2019 count), of which roughly 17% are trucks.

How long is US-431 over Unnamed Stream to Green?

The structure is 330 ft (100.6 m) long with a longest span of 31 ft (9.3 m) and a deck 30 ft wide.

Who owns US-431 over Unnamed Stream to Green?

It is owned by the State Highway Agency.