The North–South Corridor is a series of component motorways travelling through Adelaide, South Australia that will eventually form a continuous link from Old Noarlunga in the outer southern metropolitan Adelaide suburbs through to Gawler in northern metropolitan Adelaide, comprising a distance of 78km. Under South Australia's road route system, the corridor is signed as route M2. Comprising the Northern Expressway, the North–South Motorway and the Southern Expressway, parts of the corridor are still under construction or planning, with the project aiming for completion by 2030.