The contract has provisions for it to be extended for up to a further three years.
The scope of work to be carried out by Downer under the contract is pre-strip overburden removal and Downer will use existing capital equipment.
This contract will start on October 1, 2019, and replaces an existing contract which started in 2016 and expired on September 30, 2019.
Downer CEO Grant Fenn said the contract would allow the company to extend its relationship with BMA at Goonyella.
"Downer has been working closely with BMA at a number of mine sites for many years and we look forward to continuing to provide safe and productive services at the Goonyella Riverside coal mine," Fenn said.
Downer also provides mining services to the Blackwater, Goonyella, Commodore and Meandu mines in Queensland.
Shares in Downer rose 3c to $7.83 today, valuing the company at $4.66 billion.