The first stage of WestConnex includes widening the M4 from three to four lanes in each direction between Parramatta and Homebush.

Next comes an extension of the motorway – the M4 East – via a six-kilometre tunnel of three lanes in each direction from west of Concord Road, North Strathfield to Parramatta Road and the City-West Link at Haberfield. The planning application for the M4 East has now been lodged and…