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Construction methodology

The Gateway Upgrade North project saw construction of 13 bridge structures, 13 major drainage structures, and upgrades to local roads, including the intersection of Depot Road, Braun Street, Board Street and the Deagon Deviation.

Construction techniques

The project will employed a range of techniques to construct the Gateway Upgrade North project.


The installation of ‘piles’ into the ground creates a solid foundation to support the construction of large structures such as bridges or buildings. There are different methods of piling, depending on the ground conditions and the type of structure to be built. You can read more about piling on the Gateway Upgrade North project.

Construction staging

To minimise impacts to motorists, the project team constructed much of the project offline. Where possible, the team constructed the new road alignment or widened sections of motorway behind barrier. This allowed the project to maintain the existing configuration of two traffic lanes in each direction during construction.

Machinery and equipment

A large range of machinery and equipment was required to construct the 11.3km upgrade. Some of the common types of machines used include:

  • Excavators – used in heavy construction to remove large quantities of material, they feature a long arm (boom) and a bucket to remove material.
  • Piling rigs – are used to provide ground reinforcement. They can drive or vibrate support structures into the ground or excavate to create new footings. See piling fact sheet for more information.
  • Elevated work platforms – these allow workers to undertake activities at height in a safe environment.
  • Cranes – these will range from smaller wheel-based cranes used for moving concrete barriers to large 300 tonne cranes to install major bridge structures.
  • Trucks – a variety of trucks from small vehicles to large trucks with trailers will be used across the sites.
Last updated
27 May 2019