Structure 8250069 · Brule County, SD

Sd045 over Br Smith Ck

Carries Sd045 over Br Smith Ck, 7 S Buffalo Co Line.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
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 FT80 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

80 ft end to end, longest span 28 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.

Built195769 years old
Length80.1 ft24.4 m
Daily traffic949counted 2024
Last inspectedJuly 2024every 12 months

Location

StateSouth Dakota
CountyBrule
Location7 S Buffalo Co Line
CarriesSd045
CrossesBr Smith Ck
Coordinates43.83489, -98.97328

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length80.1 ft (24.4 m)
Max Span28.2 ft (8.6 m)
Deck Width34.4 ft (10.5 m)
Deck Area256.2 sq m
Main Spans3
Year Built1957

Traffic

Avg Daily Traffic949 (2024)
Truck Traffic21%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number000000008250069

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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