Structure 51108135 · Moody County, SD

233rd Street over Squaw Creek

Carries 233rd Street over Squaw Creek, 6.8e & 1.5n Of Colman.

Overall conditionGood

Set by its lowest-rated component: Substructure at 7 of 9.

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT65 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

65 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.

Built20206 years old
Length65.0 ft19.8 m
Daily traffic30counted 2022
Last inspectedAugust 2024every 24 months

Location

StateSouth Dakota
CountyMoody
Location6.8e & 1.5n Of Colman
Carries233rd Street
CrossesSquaw Creek
Coordinates44.00042, -96.67128

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length65.0 ft (19.8 m)
Max Span64.6 ft (19.7 m)
Deck Width24.6 ft (7.5 m)
Deck Area148.5 sq m
Main Spans1
Year Built2020

Traffic

Avg Daily Traffic30 (2022)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number000000051108135

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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