Structure 50219179 · Minnehaha County, SD

EB E Benson RD over I229

Carries EB E Benson RD over I229, Benson RD Interchange.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT245 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

245 ft end to end, longest span 121 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.

Built20233 years old
Length245.4 ft74.8 m
Daily traffic16,048counted 2023
Last inspectedApril 2024every 24 months

Location

StateSouth Dakota
CountyMinnehaha
LocationBenson RD Interchange
CarriesEB E Benson RD
CrossesI229
Coordinates43.58744, -96.69162

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length245.4 ft (74.8 m)
Max Span121.4 ft (37 m)
Deck Width47.6 ft (14.5 m)
Deck Area1084.6 sq m
Main Spans2
Year Built2023

Traffic

Avg Daily Traffic16,048 (2023)
Truck Traffic5%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000050219179

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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