Structure 999901500180591 · Cowley County, KS

K15 HWY over Walnut River

Carries K15 HWY over Walnut River, 1.37 Mi W Njct Us77.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure7/9 · Good
Substructure6/9 · Satisfactory
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT484 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 6/9

484 ft end to end, longest span 120 ft: about 7 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 girder bridge.

Built195373 years old
Length484.3 ft147.6 m
Daily traffic3,509counted 2023
Last inspectedOctober 2024every 12 months

Location

StateKansas
CountyCowley
Location1.37 Mi W Njct Us77
CarriesK15 HWY
CrossesWalnut River
Coordinates37.39028, -97.03167

Physical Characteristics

MaterialSteel Continuous
DesignGirder and Floorbeam
Total Length484.3 ft (147.6 m)
Max Span120.1 ft (36.6 m)
Deck Width31.5 ft (9.6 m)
Deck Area1417.0 sq m
Main Spans5
Year Built1953

Traffic

Avg Daily Traffic3,509 (2023)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number999901500180591

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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