BNSF Railway Co , a Berkshire Hathaway company, plans to spend $3.5 billion this year mainly on its core network and assets.

The company said it plans to spend $2 billion of the total on the railway's core network and related assets, $450 million to buy 227 locomotives and about $350 million on freight car and other equipment acquisitions.

The spending program includes about $300 million for federally mandated positive train control (PTC) and $300 million for terminal, line and intermodal expansion and efficiency projects.

"BNSF expects to invest approximately $3.5 billion in 2011 to ensure our infrastructure remains strong and to improve the efficiency of our operations," Matthew K. Rose, BNSF chairman and chief executive officer, said in a statement. (Reuters)