October 24, 2017 - Salini Impregilo has completed the construction of the railway bridge that is not only the most complex structure on the Sydney Metro Northwest project but also a landmark for Australia.

On October 22, its officials received New South Wales Transport Minister Andrew Constance and Greater Sydney Commissioner Lucy Turnbull for an inspection of the first cable-stayed railway bridge built on a curve in the country.

“We’ve hit yet another important milestone on this city-shaping project – we’ve got the train, we’ve got the bridge, and before long you are going to see metro trains delivering reliable public transport for the North West for the first time in our history,” Mr. Constance said.



The bridge has two towers, reaching 45 metres in height in the northwestern suburb of Rouse Hill. Each tower has 16 pipes containing scores of cables that fix them to the deck and lend support.

Workers took about seven weeks to tension the 127 steel cables as the bridge was gradually lifted off its temporary support columns and fitted in place seven metres above ground.

The bridge deck is made up of 88 concrete segments, each weighing between 70 and 140 tonnes.

It is the crowning achievement of the four-kilometre Skytrain viaduct that Salini Impregilo built with more than 4,000 workers. It is part of the new metro train line that will link the city’s northwestern suburbs with its centre.

As the most visible part of the Sydney Metro Northwest project, it will also include two elevated stations.

A train will run along the line every four minutes in the peak when services start in the first half of 2019.