The Australian Steel Institute is pleased to announce the winners of the 2018 Steel Excellence Awards for South Australia.

In the Buildings (Large Projects) category, the Adelaide Convention Centre East Wing was crowned the winner. Entered by Aurecon, the East Wing is a highly innovative structure that harnesses the benefits of structural steel to deliver an exemplar result. The project involved the construction of a new plenary hall, integrated internally with the existing Adelaide Convention Centre's Central and West Buildings—the use of structural steel was imperative to address the associated challenges. The East Building's new plenary hall is designed to cater for 3,500 people with unique multi-mode flexibility provided through the innovative use of steel for hinged and rotating seating that combine with operable walls to provide many different configurations for a variety of events. This is a world class facility.

In the Buildings (Small Projects) category, Micro-X took out the 2018 prize. The project was submitted by Tridente Architects. Micro-X is a high-tech manufacturing facility located in the recently realised mixed use innovation precinct beneath the refurbished frame of the main assembly building of the former Mitsubishi car plant in Tonsley. The built form was developed to meet both the specific requirements of the tenant, Micro-X, and to utilise a program that is adaptable for expansion and to allow for future tenant change. The building comprises eight pods developed for the project by KNCT and a purpose made manufacturing facility comprising a simple steel frame clad with metal encased PIR panelling.

Entered by Ahrens Group, the Coopers Malting Facility went home with the award for the Steel Clad Structures category. The recent $65 million development of Cooper's existing facilities at Regency Park included the construction of a purpose built in-house maltings production plant. The new facility includes six barley and six malt silos measuring 25m high and 8m in diameter, each capable of holding 500 tonnes of barley or malt. Approximately 340 tonnes of galvanizing was carried out for the project.

The Torrens to Torrens Rail Overpass won the Engineering Projects category. This project was entered by the T2T Alliance, which includes the South Australian Department of Planning, Transport and Infrastructure (DPTI), CPB Contractors, York Civil and Aurecon. The T2T rail overpass carries the existing Outer Harbor Rail line over the new lowered motorway and surface roads. Given the size and complexity of this operation—undertaken over one of Adelaide's busiest roads—the successful delivery of this project was a triumph of innovation and collaboration. The original reference design for this bridge was a prestressed concrete solution. During the tender design for the project, the concept of a steel through-girder alternative was considered and eventually adopted. The large reduction in weight of the steel structure in comparison with the concrete alternative allowed a more efficient build. Not only was impact to the traffic significantly reduced, the consequent effects of weight reduction resulted in significant savings and environmental benefits. This amazing engineering infrastructure project took only 21 days of rail corridor possession, a significant achievement.

All the South Australian award winners will vie for national honours in their respective categories, to be announced at the ASI's National Awards ceremony in December 2018.