Buses will replace trains on all or part of the Craigieburn, Cranbourne, Frankston, Pakenham, Sandringham, Sunbury, Upfield, Werribee and Williamstown lines, and the Geelong, Warrnambool and Bairnsdale lines.
Extra tram and bus services will be scheduled across the city throughout the weekend.
Trains on the Mernda, Hurstbridge, Belgrave, Lilydale, Glen Waverley and Alamein lines will continue to operate to and from Flinders Street Station across the weekend.
The work is part of the state’s biggest power upgrade along 80 kilometres of the Pakenham and Cranbourne lines, says Transport Department spokesman Jeroen Weimar.
He says crews will also carry out maintenance work between Southern Cross and Caulfield stations, as well as upgrading platforms and drainage at South Yarra station.
The work is timed to coincide with the AFL bye weekend. “While we understand that this [work] may cause significant disruption to passengers, we believe this is the least disruptive time and best opportunity to complete these essential works,” Jeroen says.
For full details of the disruptions visit ptv.vic.gov.au, or download RACV's arevo app to help you plan your commute.