Structure 14033090 · Clay County, SD

45530 306 Street over Ck

Carries 45530 306 Street over Ck, 4s & 0.4e Wakonda.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating4/9 · Poor
Substructure6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT36 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 4/9 · sets the ratingSubstructure 6/9

36 ft end to end. 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 channel-beam bridge.

Built197155 years old
Length36.1 ft11 m
Daily traffic147counted 2022
Last inspectedJune 2016every 24 months

Location

StateSouth Dakota
CountyClay
Location4s & 0.4e Wakonda
Carries45530 306 Street
CrossesCk
Coordinates42.95333, -97.09413

Physical Characteristics

MaterialConcrete
DesignChannel Beam
Total Length36.1 ft (11 m)
Max Span35.1 ft (10.7 m)
Deck Width28.9 ft (8.8 m)
Deck Area96.8 sq m
Main Spans1
Year Built1971

Traffic

Avg Daily Traffic147 (2022)
Truck Traffic3%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2016
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number000000014033090

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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