Structure 41161156 · Lawrence County, SD

Us014a Pine ST over Whitewood Ck

Carries Us014a Pine ST over Whitewood Ck, At Jct US 85 S.

Overall conditionFair

Set by its lowest-rated component: Deck and Substructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,768 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 5/9 · sets the rating

1,768 ft end to end, longest span 46 ft: about 4.9 football fields. Lengths and the semi-truck 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 girder bridge.

Built1967rebuilt 1989
Length1768.0 ft538.9 m
Daily traffic11,370counted 2024
Last inspectedAugust 2024every 24 months

Location

StateSouth Dakota
CountyLawrence
LocationAt Jct US 85 S
CarriesUs014a Pine ST
CrossesWhitewood Ck
Coordinates44.37916, -103.72625

Physical Characteristics

MaterialPrestressed Concrete
DesignGirder and Floorbeam
Total Length1768.0 ft (538.9 m)
Max Span45.6 ft (13.9 m)
Deck Width50.9 ft (15.5 m)
Deck Area8353.0 sq m
Main Spans17
Year Built1967 (reconstructed 1989)

Traffic

Avg Daily Traffic11,370 (2024)
Truck Traffic13%
Lanes On Bridge4

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000041161156

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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