Some states and territories in Australia have closed their borders to non-essential, but are open to essential travel due to COVID-19
For Victorians, they call 132 215, then press 3 that's the direct line re travel to and from in Victoria. You need a valid reason for travel and something in writing, ie going to inspect or collect an item, etc.
QLD Border Crossing fact sheet: https://www.qld.gov.au/__data/assets/pdf_file/0022/122575/border-restrictions-business-industry-fact...