Structure 58086251 · Spink County, SD

Us212 over Turtle Ck

Carries Us212 over Turtle Ck, 0.3 NW Jct US 281 S.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure8/9 · Very Good
Substructure8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT320 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 8/9Substructure 8/9

320 ft end to end, longest span 113 ft: about 4 semi-trucks nose to tail. Lengths and the semi-truck 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.

Built20179 years old
Length319.9 ft97.5 m
Daily traffic1,638counted 2024
Last inspectedMay 2024every 24 months

Location

StateSouth Dakota
CountySpink
Location0.3 NW Jct US 281 S
CarriesUs212
CrossesTurtle Ck
Coordinates44.87746, -98.52792

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length319.9 ft (97.5 m)
Max Span112.9 ft (34.4 m)
Deck Width48.6 ft (14.8 m)
Deck Area1,443 sq m
Main Spans3
Year Built2017

Traffic

Avg Daily Traffic1,638 (2024)
Truck Traffic20%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000058086251

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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