Structure 15208010 · Codington County, SD

155 Street over Ck

Carries 155 Street over Ck, 2.0n 7.2w Southshore.

Overall conditionFair

Set by its lowest-rated component: Culvert at 6 of 9.

How ratings work
Culvertsets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
22 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 6/9

A culvert 22 ft across with 2 openings. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights, so those are drawn as typical for a culvert.

Built194185 years old
Length21.7 ft6.6 m
Daily traffic73counted 2022
Last inspectedJune 2024every 24 months

Location

StateSouth Dakota
CountyCodington
Location2.0n 7.2w Southshore
Carries155 Street
CrossesCk
Coordinates45.13704, -97.06776

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length21.7 ft (6.6 m)
Max Span10.8 ft (3.3 m)
Deck Area36.3 sq m
Main Spans2
Year Built1941

Traffic

Avg Daily Traffic73 (2022)
Truck Traffic2%
Lanes On Bridge1

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000015208010

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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