Monford performed work for Perth’s largest ever infrastructure project, the $1 billion Gateway WA Perth Airport and Freight Access Project.
The project aimed to improve the safety and efficiency of one of the state’s most important transport hubs and create an iconic gateway to Western Australia. Using innovative urban design, the project included road improvements, facilities and connections for pedestrians and cyclists, noise walls, landscaping and Intelligent Transport Systems (ITS) Technology.
Monford was a constant presence on the project for almost two years and successfully delivered numerous structures of varying complexity and scope. For each project, Monford exceeded expectations and maintained an excellent safety record with no lost time injuries (LTIs) recorded. A section of the works passed through the busy Horrie Miller Drive road which involved Monford dealing with the public and implementing traffic management controls to minimise disruption to road users.
Critical to the project’s success was the collaboration and strong relationships built with Gateway WA and Main Roads representatives.
Scope of work
Monford provided construction services for:
- Leach Highway / Abernethy Road Bridge 1721 – Western Australia’s first single point urban interchange (SPUI). The bridge used continuous flight auger (CFA) piles for top-down construction which involved building a permanent structure, followed by excavation from top to bottom.
- Roe Highway / Berkshire Road Bridge 1764 – first time this design – a “tennis ball” configuration – has been used in Australia.
- Canning Trunk Main Concrete Encasement – excavation and concrete encasement of about 421 metres of Canning Truck Water Main to strict Water Corporation specifications.
- Stormwater Detention Tank – constructed to collect the stormwater, store it temporarily and release it slowly so it did not worsen downstream flooding on the project
- Pump Station – installation of baths – special structures that provide a waterproof running surface for traffic where a road is constructed below ground water level. They are designed to be as shallow as possible to minimise the amount of dewatering required during construction of the interchange. Dewatering was also minimised during the construction of pump station which drains the bath structures by using a combination of a closed-sheet piling cofferdam and deep dewatering wells.
- Noise Walls – 2.6 kilometres of noise walls installed along the western side of Roe Highway in High Wycombe to mitigate traffic noise and provide privacy screening to protect local residents.
- Retaining Walls –Construction of 725 m of retaining walls/noise barrier walls, ranging from 5.2-1.5m in height
- Concrete Barriers – construction of median, edge barriers (828m)