Structure 3239216 · Beadle County, SD

Sd037 S over Stony Run Ck

Carries Sd037 S over Stony Run Ck, 3.5 S Jct US 14.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT171 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

171 ft end to end, longest span 65 ft: about 2 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.

Built197254 years old
Length171.3 ft52.2 m
Daily traffic2,411counted 2024
Last inspectedMay 2024every 24 months

Location

StateSouth Dakota
CountyBeadle
Location3.5 S Jct US 14
CarriesSd037 S
CrossesStony Run Ck
Coordinates44.32012, -98.21417

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length171.3 ft (52.2 m)
Max Span65.0 ft (19.8 m)
Deck Width40.7 ft (12.4 m)
Deck Area647.3 sq m
Main Spans3
Year Built1972

Traffic

Avg Daily Traffic2,411 (2024)
Truck Traffic6%
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 Number000000003239216

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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