Structure 20030211 · Deuel County, SD

I029 N over 469 AVE (fasc 6373)

Carries I029 N over 469 AVE (fasc 6373), 6 SE Sd 22 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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT187 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

187 ft end to end, longest span 69 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.

Built197353 years old
Length186.7 ft56.9 m
Daily traffic4,830counted 2024
Last inspectedJuly 2023every 24 months

Location

StateSouth Dakota
CountyDeuel
Location6 SE Sd 22 Interch
CarriesI029 N
Crosses469 AVE (fasc 6373)
Coordinates44.67397, -96.82643

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length186.7 ft (56.9 m)
Max Span68.9 ft (21 m)
Deck Width40.7 ft (12.4 m)
Deck Area705.6 sq m
Main Spans3
Year Built1973

Traffic

Avg Daily Traffic4,830 (2024)
Truck Traffic33%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000020030211

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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