Structure 611073104800 · Miami County, KS

239th Street over Trib. To Rock Creek

Carries 239th Street over Trib. To Rock Creek, 2.4w 2.0s Of Antioch.

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 overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT28 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9Substructure 5/9 · sets the rating

28 ft end to end, longest span 11 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.

Built1930rebuilt 1983
Length27.6 ft8.4 m
Daily traffic142counted 2011
Last inspectedJuly 2023every 24 months

Location

StateKansas
CountyMiami
Location2.4w 2.0s Of Antioch
Carries239th Street
CrossesTrib. To Rock Creek
Coordinates38.69480, -94.99123

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length27.6 ft (8.4 m)
Max Span11.5 ft (3.5 m)
Deck Width18.0 ft (5.5 m)
Deck Area46.2 sq m
Main Spans2
Year Built1930 (reconstructed 1983)

Traffic

Avg Daily Traffic142 (2011)
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical4 — Foundations need monitoring
Structure Number000611073104800

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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