Structure 50175230 · Minnehaha County, SD

41st ST over I029

Carries 41st ST over I029, 41st Interchange.

Overall conditionGood

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

How ratings work
Deck8/9 · Very Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT242 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 7/9 · sets the ratingSubstructure 7/9 · sets the rating

242 ft end to end, longest span 124 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.

Built1979rebuilt 2024
Length242.1 ft73.8 m
Daily traffic31,921counted 2023
Last inspectedJune 2024every 24 months

Location

StateSouth Dakota
CountyMinnehaha
Location41st Interchange
Carries41st ST
CrossesI029
Coordinates43.51486, -96.78000

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length242.1 ft (73.8 m)
Max Span124.0 ft (37.8 m)
Deck Width100.7 ft (30.7 m)
Deck Area2265.7 sq m
Main Spans2
Year Built1979 (reconstructed 2024)

Traffic

Avg Daily Traffic31,921 (2023)
Truck Traffic1%
Lanes On Bridge6
Lanes Under Bridge4

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000050175230

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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