Structure 30213130 · Hand County, SD

185 ST over Shaefer Ck

Carries 185 ST over Shaefer Ck, 5.3 E & 12 N Miller.

Overall conditionPoor

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

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

Elevation

Side view, colored by inspection rating
CAR · 15 FT26 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9Superstructure 4/9Substructure 4/9

26 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 multi-beam bridge.

Built1930rebuilt 1970
Length25.9 ft7.9 m
Daily traffic25counted 2022
Last inspectedJuly 2023every 24 months

Location

StateSouth Dakota
CountyHand
Location5.3 E & 12 N Miller
Carries185 ST
CrossesShaefer Ck
Coordinates44.70728, -98.88011

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length25.9 ft (7.9 m)
Max Span24.9 ft (7.6 m)
Deck Width26.2 ft (8 m)
Deck Area63.2 sq m
Main Spans1
Year Built1930 (reconstructed 1970)

Traffic

Avg Daily Traffic25 (2022)
Truck Traffic2%
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 CriticalUnknown
Structure Number000000030213130

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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