Bridgehunter.com | Big Sioux River Bridge

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Overview

Photo taken by Jason Smith

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

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