Structure 390719506640 · Harper County, KS

NW 140 RD over Bluff Creek

Carries NW 140 RD over Bluff Creek, 1.5w 8.0n Of Attica.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT36 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 7/9Substructure 5/9 · sets the rating

36 ft end to end, longest span 17 ft. 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 multi-beam bridge.

Built196759 years old
Length36.4 ft11.1 m
Daily traffic10counted 2021
Last inspectedFebruary 2023every 24 months

Location

StateKansas
CountyHarper
Location1.5w 8.0n Of Attica
CarriesNW 140 RD
CrossesBluff Creek
Coordinates37.35521, -98.24897

Physical Characteristics

MaterialWood or Timber
DesignStringer/Multi-beam
Total Length36.4 ft (11.1 m)
Max Span17.1 ft (5.2 m)
Deck Width20.0 ft (6.1 m)
Deck Area67.7 sq m
Main Spans2
Year Built1967

Traffic

Avg Daily Traffic10 (2021)
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number000390719506640

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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