Balfour Beatty are the preferred bidder for railway track renewal and crossings for Network Rail, in a £1.5bn contract lasting for ten-years.
The construction firm are the UK’s largest and undertake infrastructure projects such as, Cross Rail, HS2 and Hinkley Point C nuclear power plant.
Leo Quinn, Balfour Beatty chief executive, said: “As one of the UK’s leading rail infrastructure suppliers, Balfour Beatty is proud to be part of the alliance appointed to ensure reliability of the UK’s rail network.
“Our expertise will be focused on driving innovative solutions that deliver sustainable, safer rail infrastructure.
“We believe that industry collaboration is the way to drive higher efficiency and service standards.
“Network Rail’s new alliance model is a great step forward in rail contract procurement.”
Shares for the company rose 1.2% on Thursday morning.