- Publication no: ABC-MAR002-11
- Published: 31 October 2011
Brisbane's Riverside Expressway (REX) was opened in 1976 and is used today by an average of 91,000 vehicles per day. Queensland Department of Transport and Main Roads (QTMR) identified that a significant proportion of the elastomeric bearings on the girder spans between the Captain Cook Bridge and the Alice Street Ramps were in need of replacement. It was recognised that this task was complicated by insufficient provision of space to allow placement of jacks under the girders, and deep soft soils of the banks of the Brisbane River which limited the options for jacking using ground support. This paper describes the structural design of the unique temporary works for the girder jacking system, with the constraints and difficulties encountered demonstrating the benefits of the design approach to the client and also the importance of providing adequate girder jacking provision as an integral part of the permanent works design.