Structure 111B00068N · Trigg County, KY

US 68 over Cumberland River

Carries US 68 over Cumberland River, US 68 / Cumberland River.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT3,805 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

3,805 ft end to end: about 11 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 through arch.

Built20188 years old
Length3805.1 ft1159.8 m
Daily traffic4,908counted 2023
Last inspectedAugust 2023every 24 months

Location

StateKentucky
CountyTrigg
LocationUS 68 / Cumberland River
CarriesUS 68
CrossesCumberland River
Coordinates36.79972, -87.97667

Physical Characteristics

MaterialSteel
DesignArch - Thru
Total Length3805.1 ft (1159.8 m)
Max Span549.9 ft (167.6 m)
Deck Width75.5 ft (23 m)
Deck Area26675.4 sq m
Main Spans1
Year Built2018

Traffic

Avg Daily Traffic4,908 (2023)
Truck Traffic20%
Lanes On Bridge4

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number111B00068N

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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