Leighton Contractors Pty Ltd was engaged by Transurban to design and construct the $550m upgrade of the Hills M2 motorway. The Hills M2 motorway plays a key role in Sydney’s orbital network, linking the north west region to the lower north shore and Sydney’s CBD. It is a key freight road and commuter route connecting the major employment hubs of Macquarie Park and the Norwest Business Park. On a typical workday, the Hills M2 is used by more than 100,000 vehicles and over 27,000 bus commuters. The proposed upgrade will significantly reduce congestion in peak periods and improve access to major growth areas along the motorway.
The project is technically challenging, with construction taking place in a live motorway environment. This has demanded innovative designs and safe construction methodologies that also minimise disruption to the travelling public. Due to these constraints UEA will introduce a wire line tracking system as part of the directional drilling process which will eliminate the need to stop the flow of traffic.
Due to the geology of the area being sandstone UEA plan to carry out the directional boring works with a specialised rock drill which will speed up the process allowing the project to be completed within the tight timeframe. Works commenced in March 2012 with an estimated completion date of June 2012.
Image Caption: 185 metre Windsor Road on-ramp crossing using HDD.