Structure 75B00076N · McLean County, KY

Ky-81 over Ky256 Green River Canal

Carries Ky-81 over Ky256 Green River Canal, .2 Mi N Jct Ky 138.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,138 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

1,138 ft end to end: about 3.2 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 through truss.

Built199927 years old
Length1138.1 ft346.9 m
Daily traffic4,053counted 2019
Last inspectedMay 2024every 24 months

Location

StateKentucky
CountyMcLean
Location.2 Mi N Jct Ky 138
CarriesKy-81
CrossesKy256 Green River Canal
Coordinates37.53389, -87.26083

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length1138.1 ft (346.9 m)
Max Span492.1 ft (150 m)
Deck Width42.7 ft (13 m)
Deck Area4509.7 sq m
Main Spans1
Year Built1999

Traffic

Avg Daily Traffic4,053 (2019)
Truck Traffic12%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number075B00076N

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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