Structure 20306000010011 · Pennington County, SD

Mccurdy Gulch over Rapid Creek

Carries Mccurdy Gulch over Rapid Creek, T 1 N R 5 E Sec 2.

Overall conditionPoor

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating4/9 · Poor
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT33 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 4/9 · sets the rating

33 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 slab bridge.

Built1945rebuilt 1985
Length32.8 ft10 m
Daily traffic10counted 1992
Last inspectedMay 2024every 24 months

Location

StateSouth Dakota
CountyPennington
LocationT 1 N R 5 E Sec 2
CarriesMccurdy Gulch
CrossesRapid Creek
Coordinates44.06667, -103.47500

Physical Characteristics

MaterialWood or Timber
DesignSlab
Total Length32.8 ft (10 m)
Max Span30.5 ft (9.3 m)
Deck Width24.0 ft (7.3 m)
Deck Area73 sq m
Main Spans1
Year Built1945 (reconstructed 1985)

Traffic

Avg Daily Traffic10 (1992)
Lanes On Bridge1

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerU.S. Forest Service
Historical SignificanceHistorical significance is not determined
Scour Critical4 — Foundations need monitoring
Structure Number020306000010011

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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