surface would be concrete, rather than asphalt as used on most roads in South Australia. This was expected to have a slightly higher up-front cost, but significantly lower maintenance costs over 30 years. Major construction started in December 2016, with completion anticipated in December 2019. Nine bridges were built for the project. The Southern Interchange required three bridges. The Bolivar and Waterloo Corner Interchanges each required a bridge over the expressway. The northern interchange required a new bridge for the northbound carriageway of Port Wakefield Road to cross the southbound on-ramp. The motorway crosses North Arm Creek, Dry Creek and the Little Para River. The project was divided into six zones. Zone 1 containing the northern interchange was let to McMahon Services. Zone 2 contained the Waterloo Corner interchange, and was let to LR&M Constructions. Zone 3 contained the Bolivar interchange and the bridge over the Little Para River and was subcontracted to Catcon. Zone 4 was the Bolivar intersection with Port Wakefield Road, let to S.E.M. Group. Zone 5 crossed Dry Creek and the salt pans. Zone six was the southern interchange. Zones 5 and 6 were both managed directly by Lendlease. The shared use path along the eastern side of the road was constructed by Intract Indigenous Contractors, and is named Tapa Martinthi Yala. The raw materials to make the concrete for the road were be supplied by Adelaide Brighton Cement, and mixed on-site. The road was reinforced with steel from Liberty OneSteel and asphalt was supplied by Boral. South Road Superway The South Road Superway is an elevated motorway in the northern suburbs of the South Australian capital city of Adelaide. The 2.8 km elevated roadway rises just north of Taminga Street, Regency Park and goes over Days Road, before access ramps at Grand Junction Road. It continues over Cormack Road and the Dry Creek railway line to join the intersection of the Port River Expressway and Salisbury Highway where the motorway continues northwards. In 2009, an announcement was made to build an elevated roadway above South Road, from just north of Regency Road to the end of South Road where it joins to the Port River Expressway and the Salisbury Highway. The elevated roadway was constructed at a cost of A$812 million and opened in March 2014. At the time, the Superway was the biggest single investment in a road project in South Australia's history. The