Works for the $3 Billion Tunnel Between M1 and M2 Motorways are Going to Finish

The New South Wales and Federal Governments have partnered with Transurban to deliver NorthConnex, a $3 billion ‘missing link’ connecting the M1 and M2 motorways in Sydney’s north via twin 9km tunnels.

Construction work has been carried out by the Lendlease Bouygues Joint Venture since 2015 and the project is expected to be completed in the third quarter of 2020.

A Transport for New South Wales spokesperson said, “When the tunnels open, they will allow motorists to bypass 21 sets of traffic lights along Pennant Hills Road, which is one of the most congested road corridors in Australia.

“NorthConnex will also allow motorists to drive from Newcastle to Melbourne without passing a single set of traffic lights.

“The tunnels have been future-proofed, built wide enough for three lanes in each direction, initially operating with two lanes and a breakdown lane in each direction.”

Around 2.3 million cubic meters of soil has been excavated by 20 roadheaders and two surface miners which carved through around 21km of mainline tunnels over a two and a half year period. Courtesy of Infra Structur

The spokesperson said more than 100,000 vehicles per day will be able to travel on the tunnels, saving motorists around 15 minutes of travel time.

NorthConnex is Australia’s deepest road tunnel and an engineering marvel, with careful planning required to excavate underneath three train lines including the new Metro-North West Line,” the spokesperson said.

At the deepest point, the tunnel is 90m – or around 27 stories below the surface – with an average depth of 60m.

Source: Infra Structur'
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