One side of Flinders Street will be closed to traffic for up to three years to build an underground connection from Flinders Street Station to the new Town Hall Station.
Construction of an additional 7 kilometer lane on Western Australia's Mitchell Highway is underway, with works delivered by BMD Constructions.
The South Australian Government has announced it will allocate $402 million to two grade separations, as part of the state's 2019-20 budget.
The Tasmanian Government has opened tenders for strengthening works on six bridges across the state.
One of the busiest road corridors in south west Sydney will be upgraded to improve inter-city connectivity.
The South Australian Government will consult with businesses potentially affected by construction on the $354 million North-South Corridor.