Structure 52803312 · Pennington County, SD

I090 W over Cheyenne Rv

Carries I090 W over Cheyenne Rv, 0.3 E Wasta Interch.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT926 FT OVERALL200 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

926 ft end to end, longest span 140 ft: about 2.6 football fields. 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.

Built196462 years old
Length925.5 ft282.1 m
Daily traffic4,404counted 2024
Last inspectedJuly 2023every 24 months

Location

StateSouth Dakota
CountyPennington
Location0.3 E Wasta Interch
CarriesI090 W
CrossesCheyenne Rv
Coordinates44.06425, -102.44149

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length925.5 ft (282.1 m)
Max Span140.1 ft (42.7 m)
Deck Width34.4 ft (10.5 m)
Deck Area2962.1 sq m
Main Spans7
Year Built1964

Traffic

Avg Daily Traffic4,404 (2024)
Truck Traffic25%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000052803312

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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