Structure 32010197 · Harding County, SD

Lewton RD over Slick Ck

Carries Lewton RD over Slick Ck, 3.0w & 7.7n C.crook.

Overall conditionGood

Set by its lowest-rated component: Culvert at 8 of 9.

How ratings work
Culvertsets the rating8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT25 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 8/9

A culvert 25 ft across with 2 openings. 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, so those are drawn as typical for a culvert.

Built201214 years old
Length25.3 ft7.7 m
Daily traffic70counted 2022
Last inspectedApril 2024every 24 months

Location

StateSouth Dakota
CountyHarding
Location3.0w & 7.7n C.crook
CarriesLewton RD
CrossesSlick Ck
Coordinates45.66300, -104.03916

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length25.3 ft (7.7 m)
Max Span12.1 ft (3.7 m)
Deck Area65.5 sq m
Main Spans2
Year Built2012

Traffic

Avg Daily Traffic70 (2022)
Truck Traffic4%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000032010197

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.

Nearby Bridges