Structure 52430324 · Pennington County, SD

Cambell ST over Ck

Carries Cambell ST over Ck, 0.5 N US 16b.

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
25 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 6/9

A culvert 25 ft across with 3 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.

Built1964rebuilt 2001
Length24.9 ft7.6 m
Daily traffic18,870counted 2022
Last inspectedApril 2023every 24 months

Location

StateSouth Dakota
CountyPennington
Location0.5 N US 16b
CarriesCambell ST
CrossesCk
Coordinates44.04642, -103.19178

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length24.9 ft (7.6 m)
Max Span7.9 ft (2.4 m)
Deck Area120.8 sq m
Main Spans3
Year Built1964 (reconstructed 2001)

Traffic

Avg Daily Traffic18,870 (2022)
Truck Traffic7%
Lanes On Bridge6

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000052430324

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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