Structure 43B00008N · Grayson County, KY

Ky-88 over Rock Creek|nolin Lake

Carries Ky-88 over Rock Creek|nolin Lake, .5 Mi W Of Jct Ky 1356.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
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 FT732 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

732 ft end to end, longest span 158 ft: about 2.0 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.

Built196264 years old
Length731.6 ft223 m
Daily traffic1,215counted 2023
Last inspectedSeptember 2024every 24 months

Location

StateKentucky
CountyGrayson
Location.5 Mi W Of Jct Ky 1356
CarriesKy-88
CrossesRock Creek|nolin Lake
Coordinates37.37028, -86.16222

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length731.6 ft (223 m)
Max Span157.8 ft (48.1 m)
Deck Width28.9 ft (8.8 m)
Deck Area1962.4 sq m
Main Spans5
Year Built1962

Traffic

Avg Daily Traffic1,215 (2023)
Truck Traffic13%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number043B00008N

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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