|Railroad||Miles operated in South Dakota1|
|Class I railroads||986|
|Burlington Northern and Santa Fe Railway Company||980|
|Soo Line Railroad Company||6|
|Dakota, Minnesota, and Eastern Railroad||719|
|Red River Valley and Western Railroad Company||4|
|D & I Railroad||97|
|Sisseton Milbank Railroad, Inc.||38|
|Sunflour Railroad, Inc.||26|
|Twin Cities and Western Railroad Company||20|
|Switching and terminal railroads||18|
|Dakota Southern Railway||1|
|Ellis & Eastern Company||17|
1 Miles operated is in terms of railroad so that a mile of single track is counted the same as a mile of double track. Sidings, turnouts, yard switching mileage, and mileage not operated are excluded. Miles operated under trackage rights provided by another (owning) railroad are included.
NOTE: For definition of railroad types see previous table.
SOURCE: Association of American Railroads, Railroads and States - 2000, Washington, DC: 2002, available at http://www.aar.org/AboutTheIndustry/ StateInformation.asp as of Mar. 19, 2002.