Network Rail has launched a new regionally-based works delivery business called Network Rail Infrastructure Projects.
This will be overseen by four regional directors and three programme directors who will be responsible for delivering infrastructure projects in their area.
Also under this new scheme, some so-called "lower risk" projects will be tendered to the market.
To enable this competitive framework, Network Rail Infrastructure Projects will become a separate legal entity in 2013 - allowing it to bid against other market competitors.
Simon Kirby, managing director, investment projects, believes that the new setup will help secure "best possible value" for the money spent.
"The changes we're making to our projects delivery business will encourage competition, innovation and closer partnerships with our suppliers to deliver projects more safely, competitively and efficiently," he said.
Earlier this year, Network Rail announced that it had finished the construction of the new concourse at Kings Cross rail station in London.