Operating Railroads in Texas

Class I railroad companies are defined as having annual carrier operating revenues of $433 million or more (as of 2011).
Currently, there are three Class I railroad companies operating in Texas which account for
about
 84% of freight railroad track (including trackage rights) in the state:
  1. Union Pacific Railroad (UPRR): (
    about
     43% of track in Texas)
  2. BNSF Railway Company (BNSF): (
    about
     35% of track in Texas)
  3. Canadian Pacific Kansas City Limited (CPKC): (about
     6% of track in Texas).
The remaining railroad track in the state is operated by
over
 50 different shortline railroad companies. Shortline railroad companies are defined as having annual operating revenues of less than $20 million (1991 dollars). These railroad companies are typically regionally located and partner with Class I railroad companies for switching railroad car shipments with customers.
Railroad rights of way are typically
privately
 owned and operated by railroad companies, and widths of the right of way vary.
The Surface Transportation Board, the federal agency tasked with oversight of interstate commerce and right of way of the interstate railroad system, also may have records of railroad ownership for active and abandoned railroad right of way.