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Big Sioux River Bridge

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Overview

Photo taken by Jason Smith

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Map 

Facts 

Overview
Pony truss bridge over Big Sioux River on 181th Street, 2 mi. north and 1.2 mi. west of Castlewood in Castlewood Township
Location
Hamlin County, South Dakota
Status
Open to traffic
History
Built 1934
Design
Bedstead Riveted Pratt pony truss bridge
Dimensions
Span length: 75.8 ft.
Total length: 75.8 ft.
Deck width: 24.3 ft.
Approximate latitude, longitude
+44.76056, -97.05000   (decimal degrees)
44°45'38" N, 97°02'60" W   (degrees°minutes'seconds")
Approximate UTM coordinates
14/654328/4958201 (zone/easting/northing)
USGS topographic map
Watertown SE
Inventory numbers
SD 29-218-030 (South Dakota structure number)
BH 32222 (Bridgehunter.com ID)
Inspection (as of 08/2010)
Deck condition rating: Satisfactory (6 out of 9)
Superstructure condition rating: Poor (4 out of 9)
Substructure condition rating: Fair (5 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 40.9 (out of 100)
Average daily traffic (as of 2009)
66

Update Log 

  • October 11, 2012: Updated by Jason Smith: Added categories "Big Sioux River", "Riveted"
  • October 8, 2009: Updated by Jason Smith: Bridge is a bedstead riveted Pratt pony truss

Sources 

  • Jason Smith - JDSmith77 [at] gmx [dot] net