Transport for NSW has advertised for specialist services to survey land boundaries and topography and identify any underground utility services along the partially completed rail line.
The Federal Government has allocated $25.5 million to Transport for NSW under the Nation Building Program to undertake planning and pre-construction design studies.
The rail line will link Port Kembla directly to the Main South Line at Picton, improving freight access for the Illawarra region.
Federal Cunngham MP Sharon Bird said the Maldon-Dombarton rail link will have a great effect on growth in the region and she welcomes the next step towards making the project a reality.
The teams of specialists will follow on from the current engineering and environmental investigations already taking place and will locate existing track, fauna crossings and adjoining roads to provide an accurate map of the corridor.