US Bridges

I-75 Ramp over 9th ST (I-75NB) Rampg

Good

Kenton County, Kentucky · I75 NB to 5th ST Ovr 9th · Structure no. 059B00088N

Built
1993
32 years old
Condition
Good
inspected November 2021
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
159 ft
3 main spans
Daily traffic
159,350
2017 count
Owner
State
State Highway Agency

About this bridge

I-75 Ramp over 9th ST (I-75NB) Rampg is a prestressed concrete continuous stringer/multi-beam or girder carrying I-75 Ramp over 9th ST (I-75NB) Rampg in Kenton County, Kentucky. It was built in 1993, so it is 32 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 159,350 vehicles a day, roughly 14% of them trucks, projected to reach 175,285 by 2037. The structure is 159 ft (48.5 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-75 Ramp
Crosses9th ST (I-75NB) Rampg
LocationI75 NB to 5th ST Ovr 9th
RouteInterstate 75
CountyKenton County
StateKentucky
Coordinates39.07917, -84.52111
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating57.5 US tons
Inventory rating34.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length159 ft (48.5 m)
Longest span53 ft (16.2 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic159,350 (2017)
Projected traffic175,285 by 2037
Trucks14%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I-75 Ramp over 9th ST (I-75NB) Rampg built?

It was built in 1993, making it 32 years old in 2025.

What condition is I-75 Ramp over 9th ST (I-75NB) Rampg 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 November 2021.

How much traffic does I-75 Ramp over 9th ST (I-75NB) Rampg carry?

About 159,350 vehicles per day (2017 count), of which roughly 14% are trucks.

How long is I-75 Ramp over 9th ST (I-75NB) Rampg?

The structure is 159 ft (48.5 m) long with a longest span of 53 ft (16.2 m) and a deck 29 ft wide.

Who owns I-75 Ramp over 9th ST (I-75NB) Rampg?

It is owned by the State Highway Agency.