The five-year contract, with options to extend for a further five years, builds on the work Downer has been delivering for Rio Tinto Iron Ore, including tyre management and track construction.
Mark Mackay, executive general manager of Downer's infrastructure projects, said: "We are very pleased to continue our long-term relationship with Rio Tinto Iron Ore, now expanding the partnership to include rail renewal services."
"Our values very strongly align to Rio's values when it comes to safety, delivery, thought leadership and relationships - this includes how we build and grow relationships and partnerships with local suppliers, contractors and the local community. For example, this new work will see us set a target of 35% local content, including partnerships with local business to develop a Pilbara rail workshop facility as well as the delivery of rail training to improve the skills and capability of local suppliers."
Matt Baartz, general manager - rail maintenance at Rio Tinto Iron Ore, confirmed that Downer has been identified as the preferred supplier for inland renewals.
He added: "Downer has a strong safety record and has performed well over a sustained period of time working across Rio Tinto."
The Downer team has already commenced work on the Rio Tinto rail renewal services contract.