This Pratt through truss bridge carries a former Chicago, Milwaukee, St. Paul & Pacific Railroad (Milwaukee Road) secondary line over the Big Sioux River between Elk Point and Westfield

Elk Point, Union County, South Dakota to Westfield, Plymouth County, Iowa

Owner: D&I Railroad

Status: In Use

Built 1908 using secondhand trusses fabricated 1900

by

Lassig Bridge & Iron Works of Chicago, Illinois

for

Railroad/Original Owner: Chicago, Milwaukee & St. Paul Railway

Design: 152' Pratt through truss and timber pile trestle

Pratt through truss bridge over Big Sioux River

Significance:

This Pratt through truss bridge crosses the Big Sioux River north of Hawarden

Hawarden, Sioux County, Iowa to Union County, South Dakota

Owner: D&I Railroad

Status: In Use

Built 1900

by

Unknown

for

Railroad/Original Owner: Chicago, Milwaukee & St. Paul Railway

Design: 138' Pratt through truss and steel stringer

Pratt through truss bridge over Big Sioux River

Significance:

This quadrangular lattice through truss bridge crosses the Big Sioux River near 10th Street in Hawarden

Hawarden, Sioux County, Iowa to Alcester, Union County, South Dakota

Owner: D&I Railroad

Status: In Use

Built 1904 and 1913

by

Unknown and American Bridge Company (Lassig Plant)

for

Railroad/Original Owner: Chicago & North Western Railway

Design: 1-145', 2-144' quadrangular lattice through trusses and 13-50' deck plate girders

Quadrangular lattice through truss bridge over Big Sioux River

Significance:

This Pratt through truss bridge crosses the Big Sioux River between Sioux City and North Sioux City

Sioux City, Woodbury County, Iowa to North Sioux City, Union County, South Dakota

Owner: BNSF Railway

Status: In Use

Built 1907 using secondhand trusses fabricated 1900

by

Lassig Bridge & Iron Works of Chicago

for

Railroad/Original Owner: Chicago, Milwaukee & St. Paul Railway

Design: 2-152' Pratt through truss and deck plate girder

Pratt through truss bridge over Big Sioux River

Significance: