Structure 65B00016N · Lee County, KY

Ky-399 over Kentucky Rvr @heidelberg

Carries Ky-399 over Kentucky Rvr @heidelberg, Ovr Ky Rvr At Heidelberg.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT466 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

466 ft end to end: about 6 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 through truss.

Built196858 years old
Length465.9 ft142 m
Daily traffic198counted 2021
Last inspectedSeptember 2024every 12 months

Location

StateKentucky
CountyLee
LocationOvr Ky Rvr At Heidelberg
CarriesKy-399
CrossesKentucky Rvr @heidelberg
Coordinates37.55111, -83.77167

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length465.9 ft (142 m)
Max Span288.1 ft (87.8 m)
Deck Width29.2 ft (8.9 m)
Deck Area1263.8 sq m
Main Spans1
Year Built1968

Traffic

Avg Daily Traffic198 (2021)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour Critical4 — Foundations need monitoring
Structure Number065B00016N

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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