Structure 80873205845 · Butler County, KS

NW 75th Street over West Branch Walnut River

Carries NW 75th Street over West Branch Walnut River, 3.5s Of Degraff.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT112 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

112 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 girder bridge.

Built197353 years old
Length111.9 ft34.1 m
Daily traffic45counted 2023
Last inspectedJanuary 2025every 24 months

Location

StateKansas
CountyButler
Location3.5s Of Degraff
CarriesNW 75th Street
CrossesWest Branch Walnut River
Coordinates37.93299, -96.85479

Physical Characteristics

MaterialSteel
DesignGirder and Floorbeam
Total Length111.9 ft (34.1 m)
Max Span89.9 ft (27.4 m)
Deck Width18.0 ft (5.5 m)
Deck Area187.6 sq m
Main Spans1
Year Built1973

Traffic

Avg Daily Traffic45 (2023)
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number000080873205845

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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