Structure 56210145 · Sanborn County, SD

415th Ave. over Jim Ck

Carries 415th Ave. over Jim Ck, 0.5e & 1.5s Artesian.

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 overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT32 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 6/9

32 ft end to end. 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 multi-beam bridge.

Built193096 years old
Length32.2 ft9.8 m
Daily traffic56counted 2022
Last inspectedAugust 2024every 24 months

Location

StateSouth Dakota
CountySanborn
Location0.5e & 1.5s Artesian
Carries415th Ave.
CrossesJim Ck
Coordinates43.98892, -97.91129

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length32.2 ft (9.8 m)
Max Span30.8 ft (9.4 m)
Deck Width19.4 ft (5.9 m)
Deck Area57.8 sq m
Main Spans1
Year Built1930

Traffic

Avg Daily Traffic56 (2022)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour CriticalUnknown
Structure Number000000056210145

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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