Structure 118B00057R · Whitley County, KY

I-75 over Csx Railroad

Carries I-75 over Csx Railroad, Nbl .80 Mi N Of Tenn ST L.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT159 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

159 ft end to end, longest span 53 ft: about 2 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.

Built196264 years old
Length159.1 ft48.5 m
Daily traffic16,501counted 2023
Last inspectedFebruary 2023every 24 months

Location

StateKentucky
CountyWhitley
LocationNbl .80 Mi N Of Tenn ST L
CarriesI-75
CrossesCsx Railroad
Coordinates36.60306, -84.10556

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length159.1 ft (48.5 m)
Max Span53.1 ft (16.2 m)
Deck Width37.7 ft (11.5 m)
Deck Area557.8 sq m
Main Spans3
Year Built1962

Traffic

Avg Daily Traffic16,501 (2023)
Truck Traffic31%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number118B00057R

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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