Structure 31176100 · Hanson County, SD

Sd038 over Wolf Ck

Carries Sd038 over Wolf Ck, 0.6 W Mccook Co Line.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT103 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

103 ft end to end, longest span 36 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 slab bridge.

Built199531 years old
Length102.7 ft31.3 m
Daily traffic921counted 2024
Last inspectedJuly 2023every 48 months

Location

StateSouth Dakota
CountyHanson
Location0.6 W Mccook Co Line
CarriesSd038
CrossesWolf Ck
Coordinates43.70255, -97.61455

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length102.7 ft (31.3 m)
Max Span36.4 ft (11.1 m)
Deck Width38.7 ft (11.8 m)
Deck Area369.3 sq m
Main Spans3
Year Built1995

Traffic

Avg Daily Traffic921 (2024)
Truck Traffic29%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000031176100

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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