Structure 59B00056N · Kenton County, KY

I-75 S Ramp over I275-i75-g&d Ramps

Carries I-75 S Ramp over I275-i75-g&d Ramps, WB I275 To SB I75 Rmp-lvl.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT807 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 6/9

807 ft end to end, longest span 158 ft: about 2.2 football fields. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built197155 years old
Length806.8 ft245.9 m
Daily traffic—reported figure implausible
Last inspectedSeptember 2023every 24 months

Location

StateKentucky
CountyKenton
LocationWB I275 To SB I75 Rmp-lvl
CarriesI-75 S Ramp
CrossesI275-i75-g&d Ramps
Coordinates39.03472, -84.59972

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length806.8 ft (245.9 m)
Max Span158.1 ft (48.2 m)
Deck Width43.0 ft (13.1 m)
Deck Area3221.3 sq m
Main Spans6
Year Built1971

Traffic

Avg Daily Traffic196,929 (2023)
That is about 98,464 vehicles per lane per day — beyond what any U.S. road carries (the busiest freeways run about 25,000–30,000). It is almost certainly a data-entry error in the National Bridge Inventory, so we leave this bridge out of traffic rankings.
Truck Traffic15%
Lanes On Bridge2
Lanes Under Bridge14

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number059B00056N

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

Nearby Bridges