St. Louis Southwestern Railway

St. Louis Southwestern Railway Company
Cotton Belt system as of 1918
Overview
HeadquartersSt. Louis
Reporting markSSW
LocaleArkansas, Illinois, Kansas, Louisiana, Missouri, New Mexico, Oklahoma, Tennessee and Texas
Dates of operation1891–1992
SuccessorSouthern Pacific Railroad
Union Pacific Railroad
Technical
Track gauge4 ft 8+12 in (1,435 mm) standard gauge

The St. Louis Southwestern Railway Company (reporting mark SSW), known by its nickname of "The Cotton Belt Route" or simply "Cotton Belt", was a Class I railroad that operated between St. Louis, Missouri, and various points in the U.S. states of Arkansas, Tennessee, Louisiana, and Texas from 1891 to 1980, when the system added the Rock Island's Golden State Route and operations in Kansas, Oklahoma, and New Mexico. The Cotton Belt operated as a Southern Pacific subsidiary from 1932 until 1992, when its operation was assumed by Southern Pacific Transportation Company.