Structure 999916900610471 · Miami County, KS

Us169 HWY NB over Marais Des Cygnes River

Carries Us169 HWY NB over Marais Des Cygnes River, 0.40 Mi S Jct K279 NB.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure8/9 · Very Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT830 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 8/9

830 ft end to end, longest span 125 ft: about 2.3 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 multi-beam bridge.

Built197650 years old
Length829.7 ft252.9 m
Daily traffic5,284counted 2023
Last inspectedFebruary 2024every 24 months

Location

StateKansas
CountyMiami
Location0.40 Mi S Jct K279 NB
CarriesUs169 HWY NB
CrossesMarais Des Cygnes River
Coordinates38.50556, -94.93139

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length829.7 ft (252.9 m)
Max Span125.0 ft (38.1 m)
Deck Width46.9 ft (14.3 m)
Deck Area3616.5 sq m
Main Spans7
Year Built1976

Traffic

Avg Daily Traffic5,284 (2023)
Truck Traffic14%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number999916900610471

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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