US Bridges

KY-408 over Purchase Parkway

Fair

Marshall County, Kentucky · .80 MI West of JCT US 641 · Structure no. 079B00103N

Built
1967
58 years old
Condition
Fair
inspected June 2023
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
160 ft
2 main spans
Daily traffic
1,137
2023 count
Owner
State
State Highway Agency

About this bridge

KY-408 over Purchase Parkway is a concrete continuous box beam or girders - single or spread carrying KY-408 over Purchase Parkway in Marshall County, Kentucky. It was built in 1967, so it is 58 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 1,137 vehicles a day, projected to reach 1,137 by 2043. The structure is 160 ft (48.8 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesKY-408
CrossesPurchase Parkway
Location.80 MI West of JCT US 641
RouteState Highway 408
CountyMarshall County
StateKentucky
Coordinates36.86111, -88.36722
Functional classRural Minor Collector

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.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.9 US tons
Inventory rating44.4 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length160 ft (48.8 m)
Longest span80 ft (24.4 m)
Deck width32 ft (9.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,137 (2023)
Projected traffic1,137 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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 proposedReplacement because of relocation of road
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was KY-408 over Purchase Parkway built?

It was built in 1967, making it 58 years old in 2025.

What condition is KY-408 over Purchase Parkway 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 June 2023.

How much traffic does KY-408 over Purchase Parkway carry?

About 1,137 vehicles per day (2023 count).

How long is KY-408 over Purchase Parkway?

The structure is 160 ft (48.8 m) long with a longest span of 80 ft (24.4 m) and a deck 32 ft wide.

Who owns KY-408 over Purchase Parkway?

It is owned by the State Highway Agency.