Structure 10B00061N · Boyd County, KY

Ky-1945 over Jack Branch

Carries Ky-1945 over Jack Branch, 1.5 Mi S.- Jct Ky 854.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT30 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

30 ft end to end. Lengths and the car 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.

Built198739 years old
Length29.9 ft9.1 m
Daily traffic140counted 2021
Last inspectedOctober 2023every 24 months

Location

StateKentucky
CountyBoyd
Location1.5 Mi S.- Jct Ky 854
CarriesKy-1945
CrossesJack Branch
Coordinates38.27722, -82.74528

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length29.9 ft (9.1 m)
Max Span27.9 ft (8.5 m)
Deck Width21.0 ft (6.4 m)
Deck Area58.2 sq m
Main Spans1
Year Built1987

Traffic

Avg Daily Traffic140 (2021)
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number010B00061N

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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