Structure 50205208 · Minnehaha County, SD

10th Street over Big Sioux River

Carries 10th Street over Big Sioux River, West Of Reid Street.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT217 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

217 ft end to end, longest span 74 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.

Built1934rebuilt 1978
Length217.2 ft66.2 m
Daily traffic10,900counted 2022
Last inspectedOctober 2024every 24 months

Location

StateSouth Dakota
CountyMinnehaha
LocationWest Of Reid Street
Carries10th Street
CrossesBig Sioux River
Coordinates43.54620, -96.72289

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length217.2 ft (66.2 m)
Max Span74.5 ft (22.7 m)
Deck Width62.3 ft (19 m)
Deck Area1257.8 sq m
Main Spans4
Year Built1934 (reconstructed 1978)

Traffic

Avg Daily Traffic10,900 (2022)
Truck Traffic4%
Lanes On Bridge4

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000050205208

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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