The Australian Rail Track Corporation (ARTC) is working to secure the required resources and developing a plan to repair rail lines damaged by flooding.
The flooding incident has affected 18 sites, stretching over 300 kilometres, with most having now been assessed by engineering and project staff.
A small section of track has not been assessed yet due to constraints in the area.
Large scale works are now underway, with plant, equipment, and materials on site for repair works.
Additional contractors are now also onsite to assist ARTC crews and works include building access roads, ensuring supplies can get to damaged locations and supporting restoration works.
ARTC expects track will remain closed for at least twelve days and a further update on timeframes for recovery will be provided later this week.
A spokesperson for the ARTC said meteorologists described the rainfall as a once in 200-year event.
“Because of the extensive weather event, that included over 200 millimetres of rain in 24 hours in some areas, services from Adelaide to Perth and Darwin continue to be impacted.
“Repair works are underway along a section of track over 300km in length.
“Additional contractors are now on site to assist ARTC crews and works include building access roads, ensuring supplies can get to damaged locations and supporting restoration works.”