Structure 41079199 · Lawrence County, SD

Elmore RD over Spearfish Ck

Carries Elmore RD over Spearfish Ck, 0.2km West Of 14a.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating4/9 · Poor
Substructure6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
24 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 4/9 · sets the ratingSubstructure 6/9

24 ft end to end. 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 or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built1901125 years old
Length24.0 ft7.3 m
Daily traffic50counted 2022
Last inspectedJuly 2024every 24 months

Location

StateSouth Dakota
CountyLawrence
Location0.2km West Of 14a
CarriesElmore RD
CrossesSpearfish Ck
Coordinates44.31534, -103.88693

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length24.0 ft (7.3 m)
Max Span20.0 ft (6.1 m)
Deck Width17.1 ft (5.2 m)
Deck Area38.0 sq m
Main Spans1
Year Built1901

Traffic

Avg Daily Traffic50 (2022)
Truck Traffic3%
Lanes On Bridge1

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number000000041079199

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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