Structure 480700 · Kingman County, KS

Rs 1704 SW 50 AVE over S. Fork Ninnescah River

Carries Rs 1704 SW 50 AVE over S. Fork Ninnescah River, 1.0s 4.0e Of Calista.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT518 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9Substructure 5/9 · sets the rating

518 ft end to end, longest span 60 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 multi-beam bridge.

Built195670 years old
Length518.0 ft157.9 m
Daily traffic350counted 2021
Last inspectedJanuary 2023every 24 months

Location

StateKansas
CountyKingman
Location1.0s 4.0e Of Calista
CarriesRs 1704 SW 50 AVE
CrossesS. Fork Ninnescah River
Coordinates37.62575, -98.20894

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length518.0 ft (157.9 m)
Max Span59.7 ft (18.2 m)
Deck Width26.2 ft (8 m)
Deck Area1263.2 sq m
Main Spans9
Year Built1956

Traffic

Avg Daily Traffic350 (2021)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number000000000480700

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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