US Bridges

KY-20 over I 275

Fair

Boone County, Kentucky · 1 MI W of JCT Ky 212 · Structure no. 008B00051N

Built
1972
53 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
234 ft
2 main spans
Daily traffic
7,161
2022 count
Owner
State
State Highway Agency

About this bridge

KY-20 over I 275 is a steel continuous stringer/multi-beam or girder carrying KY-20 over I 275 in Boone County, Kentucky. It was built in 1972, so it is 53 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 7,161 vehicles a day, roughly 13% of them trucks, projected to reach 7,161 by 2042. The structure is 234 ft (71.3 m) long and 48 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesKY-20
CrossesI 275
Location1 MI W of JCT Ky 212
RouteState Highway 20
CountyBoone County
StateKentucky
Coordinates39.07417, -84.67111
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.6 US tons
Inventory rating41.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length234 ft (71.3 m)
Longest span117 ft (35.7 m)
Deck width48 ft (14.6 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,161 (2022)
Projected traffic7,161 by 2042
Trucks13%
Lanes on structure2
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was KY-20 over I 275 built?

It was built in 1972, making it 53 years old in 2025.

What condition is KY-20 over I 275 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-20 over I 275 carry?

About 7,161 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is KY-20 over I 275?

The structure is 234 ft (71.3 m) long with a longest span of 117 ft (35.7 m) and a deck 48 ft wide.

Who owns KY-20 over I 275?

It is owned by the State Highway Agency.