US Bridges

KY-80 over Bridge over Unnam Creek

Good

Calloway County, Kentucky · 1 MI E. U.S. 641 · Structure no. 018B00129R

Built
2004
21 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
230 ft
3 main spans
Daily traffic
2,498
2021 count
Owner
State
State Highway Agency

About this bridge

KY-80 over Bridge over Unnam Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying KY-80 over Bridge over Unnam Creek in Calloway County, Kentucky. It was built in 2004, so it is 21 years old, younger than the Kentucky average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,498 vehicles a day, roughly 15% of them trucks, projected to reach 2,498 by 2041. The structure is 230 ft (70 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesKY-80
CrossesBridge over Unnam Creek
Location1 MI E. U.S. 641
RouteState Highway 80
CountyCalloway County
StateKentucky
Coordinates36.65167, -88.28806
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99.5 US tons
Inventory rating59.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length230 ft (70 m)
Longest span79 ft (24 m)
Deck width45 ft (13.6 m)
Roadway width41 ft (12.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,498 (2021)
Projected traffic2,498 by 2041
Trucks15%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was KY-80 over Bridge over Unnam Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is KY-80 over Bridge over Unnam Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does KY-80 over Bridge over Unnam Creek carry?

About 2,498 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is KY-80 over Bridge over Unnam Creek?

The structure is 230 ft (70 m) long with a longest span of 79 ft (24 m) and a deck 45 ft wide.

Who owns KY-80 over Bridge over Unnam Creek?

It is owned by the State Highway Agency.