Structure 89B00103N · Muhlenberg County, KY

Ky-70 over Green River Overflow

Carries Ky-70 over Green River Overflow, .80 Mi East Of Butler Cl.

Overall conditionFair

Set by its lowest-rated component: Superstructure and Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT137 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

137 ft end to end, longest span 65 ft. 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 box-beam bridge.

Built198046 years old
Length137.1 ft41.8 m
Daily traffic1,161counted 2023
Last inspectedSeptember 2021every 48 months

Location

StateKentucky
CountyMuhlenberg
Location.80 Mi East Of Butler Cl
CarriesKy-70
CrossesGreen River Overflow
Coordinates37.21278, -86.91278

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length137.1 ft (41.8 m)
Max Span65.0 ft (19.8 m)
Deck Width30.5 ft (9.3 m)
Deck Area388.7 sq m
Main Spans2
Year Built1980

Traffic

Avg Daily Traffic1,161 (2023)
Truck Traffic7%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2021
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical7 — Countermeasures installed
Structure Number089B00103N

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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