Structure 8B00050R · Boone County, KY

Ky-237 over I 275

Carries Ky-237 over I 275, 1 Mi N Of Jct Ky 20.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT212 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

212 ft end to end, longest span 116 ft: about 3 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.

Built197650 years old
Length211.9 ft64.6 m
Daily traffic6,757counted 2022
Last inspectedJune 2023every 48 months

Location

StateKentucky
CountyBoone
Location1 Mi N Of Jct Ky 20
CarriesKy-237
CrossesI 275
Coordinates39.08111, -84.70917

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length211.9 ft (64.6 m)
Max Span116.1 ft (35.4 m)
Deck Width39.7 ft (12.1 m)
Deck Area781.7 sq m
Main Spans2
Year Built1976

Traffic

Avg Daily Traffic6,757 (2022)
Truck Traffic6%
Lanes On Bridge2
Lanes Under Bridge6

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number008B00050R

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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