Ipswich motorway; Australia: delivering transport solutions for urban corridors

摘要

The A$1.95 billion (£1.3 billion) Ipswich motorway upgrade near Brisbane was Australia's largest road infrastructure alliance. Origin Alliance - comprising the client, two designers and three contractors - was tasked with transforming an existing substandard four-lane motorway into a modern, intelligent six-lane highway with a future capacity for eight lanes using network-managed hard-shoulder running. Only 8.5 km long, the upgrade demanded an unprecedented level of temporary traffic management for up to 100 000 vehicles a day. This paper outlines the complexities in design and construction and the means by which works were planned to guarantee the utmost level of safety to the travelling public and on-site workforce.