The Frisco was absorbed by the Burlington Northern (BN) in 1980, and in 1994 the BN merged with the Santa Fe, creating the current Burlington Northern Santa Fe (BNSF) Railway. BNSF has three switch yards (two small) in Springfield. Mainlines to and from Kansas City, St. Louis, Memphis and Tulsa converge at the railroad's yard facility in northern Springfield. In October 2006, BNSF announced plans to upgrade its Tulsa and Memphis mainlines into Springfield to handle an additional four to six daily intermodal freight trains between the West Coast and the Southeast. The Missouri and Northern Arkansas Railroad also operates several miles of (former Missouri Pacific) industrial track in the city.