Structure 33322176 · Hughes County, SD

Sd034 over Chapelle Ck

Carries Sd034 over Chapelle Ck, 22.5 E Jct US 14 & 83.

Overall conditionPoor

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

How ratings work
Deck8/9 · Very Good
Superstructure5/9 · Fair
Substructuresets the rating4/9 · Poor
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT197 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 5/9Substructure 4/9 · sets the rating

197 ft end to end, longest span 38 ft: about 3 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.

Built194977 years old
Length196.5 ft59.9 m
Daily traffic691counted 2024
Last inspectedApril 2024every 12 months

Location

StateSouth Dakota
CountyHughes
Location22.5 E Jct US 14 & 83
CarriesSd034
CrossesChapelle Ck
Coordinates44.28693, -99.92290

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length196.5 ft (59.9 m)
Max Span37.7 ft (11.5 m)
Deck Width32.2 ft (9.8 m)
Deck Area587.0 sq m
Main Spans5
Year Built1949

Traffic

Avg Daily Traffic691 (2024)
Truck Traffic12%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number000000033322176

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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