Structure 45460197 · McPherson County, SD

371st Avenue over Foot Creek

Carries 371st Avenue over Foot Creek, 2.3n Of Wetonka.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT92 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 6/9

92 ft end to end, longest span 25 ft. Lengths and the car 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 slab bridge.

Built195670 years old
Length91.9 ft28 m
Daily traffic95counted 2022
Last inspectedAugust 2023every 24 months

Location

StateSouth Dakota
CountyMcPherson
Location2.3n Of Wetonka
Carries371st Avenue
CrossesFoot Creek
Coordinates45.65509, -98.76657

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length91.9 ft (28 m)
Max Span24.9 ft (7.6 m)
Deck Width28.2 ft (8.6 m)
Deck Area240.8 sq m
Main Spans4
Year Built1956

Traffic

Avg Daily Traffic95 (2022)
Truck Traffic3%
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000045460197

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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