US Bridges

KY-1120 over I 471

Fair

Campbell County, Kentucky · Over I-471 Interchange · Structure no. 019B00054N

Built
1977
48 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
289 ft
2 main spans
Daily traffic
11,117
2023 count
Owner
State
State Highway Agency

About this bridge

KY-1120 over I 471 is a steel continuous stringer/multi-beam or girder carrying KY-1120 over I 471 in Campbell County, Kentucky. It was built in 1977, so it is 48 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 11,117 vehicles a day, roughly 9% of them trucks, projected to reach 11,117 by 2043. The structure is 289 ft (88.1 m) long and 77 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesKY-1120
CrossesI 471
LocationOver I-471 Interchange
RouteState Highway 1120
CountyCampbell County
StateKentucky
Coordinates39.0925, -84.47722
Functional classUrban 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating63.3 US tons
Inventory rating38 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length289 ft (88.1 m)
Longest span143 ft (43.6 m)
Deck width77 ft (23.4 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,117 (2023)
Projected traffic11,117 by 2043
Trucks9%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$2.8 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was KY-1120 over I 471 built?

It was built in 1977, making it 48 years old in 2025.

What condition is KY-1120 over I 471 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 2023.

How much traffic does KY-1120 over I 471 carry?

About 11,117 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is KY-1120 over I 471?

The structure is 289 ft (88.1 m) long with a longest span of 143 ft (43.6 m) and a deck 77 ft wide.

Who owns KY-1120 over I 471?

It is owned by the State Highway Agency.