Structure 52419299 · Pennington County, SD

East Boulevard over Rapid Ck

Carries East Boulevard over Rapid Ck, 0.1 N Jct Sd 44 - Rc.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT209 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

209 ft end to end, longest span 58 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 slab bridge.

Built197749 years old
Length209.0 ft63.7 m
Daily traffic15,878counted 2022
Last inspectedApril 2024every 24 months

Location

StateSouth Dakota
CountyPennington
Location0.1 N Jct Sd 44 - Rc
CarriesEast Boulevard
CrossesRapid Ck
Coordinates44.08244, -103.21465

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length209.0 ft (63.7 m)
Max Span58.1 ft (17.7 m)
Deck Width94.2 ft (28.7 m)
Deck Area1828.2 sq m
Main Spans4
Year Built1977

Traffic

Avg Daily Traffic15,878 (2022)
Truck Traffic2%
Lanes On Bridge4

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000052419299

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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