Structure 570863105020 · Marion County, KS

320 Rd. over Clear Creek

Carries 320 Rd. over Clear Creek, 1.8s 1.1e Lost Springs.

Overall conditionPoor

Set by its lowest-rated component: Deck and Superstructure at 3 of 9.

How ratings work
Decksets the rating3/9 · Serious
Superstructuresets the rating3/9 · Serious
Substructure5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
23 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 3/9 · sets the ratingSuperstructure 3/9 · sets the ratingSubstructure 5/9

23 ft end to end, longest span 11 ft. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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 slab bridge.

Built193096 years old
Length22.6 ft6.9 m
Daily traffic20counted 2020
Last inspectedNovember 2024every 12 months

Location

StateKansas
CountyMarion
Location1.8s 1.1e Lost Springs
Carries320 Rd.
CrossesClear Creek
Coordinates38.53689, -96.94728

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length22.6 ft (6.9 m)
Max Span10.8 ft (3.3 m)
Deck Width17.4 ft (5.3 m)
Deck Area36.6 sq m
Main Spans2
Year Built1930

Traffic

Avg Daily Traffic20 (2020)
Lanes On Bridge1

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical4 — Foundations need monitoring
Structure Number000570863105020

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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