DPTI have recently upgraded their brand new Greenway pages with much more detail. There is now information available about completed Greenway projects, planned routes and current works. See: http://www.infrastructure.sa.gov.au/major_projects/greenways_project/greenways_project.
In particular, Port Adelaide and North-Western Suburbs residents will be very pleased with the updates to the Outer Harbour Greenway page where they’ll be able to see a more detailed map of the route and an outline of the major bike-friendly modifications planned for the Birkenhead Bridge – see: http://www.infrastructure.sa.gov.au/major_projects/greenways_project/greenways_project/outer_harbor_greenway