Structure 48283108 · Mellette County, SD

Us083 over White Rv

Carries Us083 over White Rv, Jones-mellette Co Line.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
Channelnot part of overall9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT469 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

469 ft end to end, longest span 97 ft: about 7 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.

Built20215 years old
Length469.2 ft143 m
Daily traffic1,188counted 2024
Last inspectedNovember 2023every 24 months

Location

StateSouth Dakota
CountyMellette
LocationJones-mellette Co Line
CarriesUs083
CrossesWhite Rv
Coordinates43.71340, -100.68473

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length469.2 ft (143 m)
Max Span97.1 ft (29.6 m)
Deck Width42.7 ft (13 m)
Deck Area1,859 sq m
Main Spans5
Year Built2021

Traffic

Avg Daily Traffic1,188 (2024)
Truck Traffic28%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000048283108

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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