The Government of Victoria has announced an A$534m ($361m) second package of works on the Sunbury line.

Works under the contract, which is part of the $2.1bn ‘More Trains for Sunbury’ project, will begin next month.

John Holland, CPB Contractors, AECOM and Metro Trains Melbourne were awarded the contract.

The upgrade project will ensure that more high-capacity metro trains will operate on the line from Cranbourne and Pakenham to Sunbury and connected via the Metro Tunnel.

It will increase capacity by 113,000 passengers each week.

As part of the second package of works, overhead power upgrades will be carried out between Sunbury and the Metro Tunnel’s eastern entrance in South Yarra near South Kensington station.

In addition, power infrastructure and signalling power upgrades works will be delivered at the Calder Park sidings.

In August, site investigations for the platform extensions at ten stations between Sunbury and Footscray, as well as stabling at Sunbury, Calder Park and Watergardens started.

The Sunbury project also includes construction of wheelchair boarding platforms at eight stations.

Victoria Government Minister for Transport Infrastructure Jacinta Allan said: “Work is already underway preparing the Sunbury Line for a range of platform extensions and stabling upgrades, and within weeks the biggest power and signalling upgrade ever seen along the corridor will also begin.”

“These upgrades will pave the way for new high-capacity trains to run along the Sunbury line and through the Metro Tunnel- providing more regular, reliable and comfortable services for passengers on this line.”