Structure 41211100 · Lawrence County, SD

Whitewood Service over County RD Rc P&e Rr

Carries Whitewood Service over County RD Rc P&e Rr, E Boundary Whitewood.

Overall conditionPoor

Set by its lowest-rated component: Deck at 3 of 9.

How ratings work
Decksets the rating3/9 · Serious
Superstructure4/9 · Poor
Substructure4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT254 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 3/9 · sets the ratingSuperstructure 4/9Substructure 4/9

254 ft end to end, longest span 49 ft: about 4 semi-trucks nose to tail. 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 multi-beam bridge.

Built193789 years old
Length253.9 ft77.4 m
Daily traffic500counted 2022
Last inspectedJune 2022every 12 months

Location

StateSouth Dakota
CountyLawrence
LocationE Boundary Whitewood
CarriesWhitewood Service
CrossesCounty RD Rc P&e Rr
Coordinates44.46096, -103.63691

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length253.9 ft (77.4 m)
Max Span49.2 ft (15 m)
Deck Width32.5 ft (9.9 m)
Deck Area766.3 sq m
Main Spans6
Year Built1937

Traffic

Avg Daily Traffic500 (2022)
Truck Traffic3%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJune 2022
Inspection FrequencyEvery 12 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour CriticalNot applicable
Structure Number000000041211100

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