Structure 118B00085N · Whitley County, KY

Ky-628 over I 75 @ 6.420

Carries Ky-628 over I 75 @ 6.420, .30 Mi W Of Jct US 25w.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT320 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 7/9

320 ft end to end, longest span 93 ft: about 4 semi-trucks nose to tail. 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 tee-beam bridge.

Built196462 years old
Length319.9 ft97.5 m
Daily traffic627counted 2022
Last inspectedFebruary 2023every 24 months

Location

StateKentucky
CountyWhitley
Location.30 Mi W Of Jct US 25w
CarriesKy-628
CrossesI 75 @ 6.420
Coordinates36.67556, -84.13306

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length319.9 ft (97.5 m)
Max Span92.8 ft (28.3 m)
Deck Width37.7 ft (11.5 m)
Deck Area1121.2 sq m
Main Spans4
Year Built1964

Traffic

Avg Daily Traffic627 (2022)
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number118B00085N

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.

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