Structure 59398295 · Stanley County, SD

Us083 over Bad Rv

Carries Us083 over Bad Rv, Within Fort Pierre.

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 overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT434 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

434 ft end to end, longest span 120 ft: about 6 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.

Built1956rebuilt 1987
Length434.1 ft132.3 m
Daily traffic6,040counted 2024
Last inspectedJuly 2024every 12 months

Location

StateSouth Dakota
CountyStanley
LocationWithin Fort Pierre
CarriesUs083
CrossesBad Rv
Coordinates44.35121, -100.37302

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length434.1 ft (132.3 m)
Max Span120.1 ft (36.6 m)
Deck Width57.4 ft (17.5 m)
Deck Area2315.2 sq m
Main Spans4
Year Built1956 (reconstructed 1987)

Traffic

Avg Daily Traffic6,040 (2024)
Truck Traffic9%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number000000059398295

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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