Structure 41161038 · Lawrence County, SD

Sd034 over False Bottom Ck

Carries Sd034 over False Bottom Ck, 5.1 SE Butte Co Line.

Overall conditionGood

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

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT71 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 71 ft across with 6 openings. 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, so those are drawn as typical for a culvert.

Built199828 years old
Length70.9 ft21.6 m
Daily traffic3,690counted 2024
Last inspectedApril 2024every 48 months

Location

StateSouth Dakota
CountyLawrence
Location5.1 SE Butte Co Line
CarriesSd034
CrossesFalse Bottom Ck
Coordinates44.55096, -103.72715

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length70.9 ft (21.6 m)
Max Span11.2 ft (3.4 m)
Deck Area289.4 sq m
Main Spans6
Year Built1998

Traffic

Avg Daily Traffic3,690 (2024)
Truck Traffic27%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000041161038

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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