Artist impressions of the Skytrain and Windsor Road bridge. Photo: Supplied
A 270-metre cable bridge over Windsor Road near Rouse Hill will be built as part of the $8.3 billion north-west rail link.
The O'Farrell government announced on Wednesday it had signed the second major construction contract for its centrepiece public transport project, the 23- kilometre train line linking Epping and Rouse Hill.
The $340 million contract signed with Italian consortium Impregilo-Salini is to build a four kilometre so-called skytrain, or raised section of rail line, between Bella Vista and Rouse Hill.
Part of the north-west rail line linking Epping and Rouse Hill. Photo: Supplied
But the line will need to cross Windsor Road, the main road corridor to the north-west. Designs for this new bridge had not been previously released, and the consortium has designed a cable-bridge anchored by two 40-metre steel shell towers filled with concrete.
Transport Minister Gladys Berejiklian called the bridge design "iconic" and said that it was planned to minimise disruption on the ground.
"You will see much fewer beams than are usually used for bridges," Ms Berejiklian said, "so the community on the ground isn't disturbed. It is iconic not only because of the operational advantage it brings but also for the way it looks.
"It is pleasing to the eye, as well as pleasing to the community who can actually get about their ongoing day to day business,'' she said.
The skytrain and new Windsor Road bridge are planned to be finished by 2017, and the train line is due to be running by 2019.
The bridge will be built with 32 steel cables, with a combined length of 1.4 kilometres.