Publications

A key element of optimised asset management involves determining the type and timing of maintenance and renewals actions to achieve the least whole-of-life cost. This can often be a very complex process in reality because of the many different…

As part of the ongoing upgrade of timber-piled bridges on the North Island Main Trunk, KiwiRail identified three bridges (BR 280, 281, 282) to be replaced in 2012. These bridges all cross streams of 16 m to 42 m in width and provide a ballast deck…

The Bailey bridge system was originally invented for military usage during World War II. Since then, it has been used to meet emergency or temporary bridge needs. It has also been widely used as a permanent solution for pedestrian and road bridge…

Economic analysis can inform investment decisions around proposed bridge projects. This paper outlines the evaluative techniques and methodologies used in appraising a proposed bridge replacement and approach realignment project located in rural…

Sydney’s ANZAC Bridge was recently the subject of a maintenance project which addressed four main areas to improve the future performance of the structure. These areas were: stay cable improvements

The paper focuses on the urban design aspects of bridge infrastructure, recognising the importance bridges have in our communities and the often overlooked social responsibility bridge builders have when undertaking such projects.Using examples from…

The Auckland Harbour Bridge (AHB), built in 1959 and widened in 1969, has some 125,000 m2 of external steel surfaces which have been maintained using a ‘patch and recoat’ philosophy. This has been carried out since 1998 by Total Bridge Services…

Ideally, a balanced cantilever bridge is built with its superstructure continuous between the abutments. For long bridges, mid-length expansion joints may be necessary. The separation of expansion joints may be maximised by supporting the…

The seismic design provisions in the Australian bridge code AS 5100 have recently been revised to include several improvements and remove ambiguities found in the 2004 edition of the code. DR AS 5100.2: 2014 provides two design approaches, namely…

Melbourne’s 2.5 km long West Gate Bridge includes an 848 m long steel box girder portion, over the Yarra River, comprising cable-stayed spans and an orthotropic steel deck. As with other similar bridges throughout the world, the steel spans of the…