Structure 102B00052N · Rockcastle County, KY

Ky-490 over Csx Rr & Roundstone CR

Carries Ky-490 over Csx Rr & Roundstone CR, 100 East Of US 25.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT437 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

437 ft end to end, longest span 106 ft: 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 multi-beam bridge.

Built198343 years old
Length437.0 ft133.2 m
Daily traffic257counted 2023
Last inspectedSeptember 2022every 48 months

Location

StateKentucky
CountyRockcastle
Location100 East Of US 25
CarriesKy-490
CrossesCsx Rr & Roundstone CR
Coordinates37.29889, -84.21389

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length437.0 ft (133.2 m)
Max Span106.0 ft (32.3 m)
Deck Width41.7 ft (12.7 m)
Deck Area1691.6 sq m
Main Spans5
Year Built1983

Traffic

Avg Daily Traffic257 (2023)
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number102B00052N

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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