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DAIR - Oak Ridge Bridge

Sioux County, Iowa, and Lincoln County, South Dakota

Photos 

Oak ridge

Photo taken by Mick Zerr in September 2010

Enlarge

BH Photo #270786

Map 

Description 

1914 date comes from the Milwaukee Road Archives at the Milwaukee Central Library

Facts 

Overview
Pratt pony truss bridge over Big Sioux River on Dakota & Iowa Railroad
Location
Sioux County, Iowa, and Lincoln County, South Dakota
Status
Open to traffic
History
Fabricated ca. 1900, moved here 1914, Rehabilitated 2014
Railroads
- Chicago, Milwaukee, St. Paul & Pacific Railroad (MILW; CMStP&P; CMStP)
- Dakota & Iowa Railroad (DAIR; D&I)
Design
Pratt Pony Truss
Dimensions
Length of largest span: 125.0 ft.
Total length: 805.0 ft.
Approximate latitude, longitude
+43.17104, -96.46674   (decimal degrees)
43°10'16" N, 96°28'00" W   (degrees°minutes'seconds")
Approximate UTM coordinates
14/705912/4782924 (zone/easting/northing)
Quadrangle map:
Fairview
Inventory number
BH 51957 (Bridgehunter.com ID)

Categories 

6-panel truss (579)
Beam (14,296)
Big Sioux River (63)
Built 1914 (763)
Built during 1910s (9,227)
Chicago, Milwaukee, St. Paul & Pacific Railroad (944)
Dakota & Iowa Railroad (8)
Deck girder (5,019)
Girder (9,083)
Iowa (6,179)
Lincoln County, South Dakota (23)
Open (38,113)
Owned by railroad (11,051)
 Pin-connected (3,683)
Plate girder (6,907)
Pony truss (15,666)
Pratt pony truss (3,462)
Pratt truss (8,675)
Railroad (14,303)
Sioux County, Iowa (22)
South Dakota (626)
Span length 125-175 feet (3,987)
State line crossing (783)
Timber stringer (3,685)
Total length 500-1000 feet (2,653)
Truss (31,122)

Update Log 

  • January 3, 2015: Updated by John Marvig: Added information
  • November 21, 2013: New photo from Mick Zerr
  • October 26, 2012: Updated by Jason Smith: Added categories "Big Sioux River", "Pin-connected"
  • April 5, 2012: Added by Jason Smith

Sources 

Comments 

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