Structure 63160202 · Turner County, SD

Sd019 over Turkey Ridge Ck

Carries Sd019 over Turkey Ridge Ck, 2.1 S Jct US 18 West.

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 overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT125 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

125 ft end to end, longest span 39 ft. 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.

Built196363 years old
Length125.0 ft38.1 m
Daily traffic1,408counted 2024
Last inspectedNovember 2024every 24 months

Location

StateSouth Dakota
CountyTurner
Location2.1 S Jct US 18 West
CarriesSd019
CrossesTurkey Ridge Ck
Coordinates43.21201, -97.08180

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length125.0 ft (38.1 m)
Max Span39.4 ft (12 m)
Deck Width32.5 ft (9.9 m)
Deck Area377.2 sq m
Main Spans3
Year Built1963

Traffic

Avg Daily Traffic1,408 (2024)
Truck Traffic15%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000063160202

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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