Overview of Australian Urban Road Tunnels

Abstract

This paper collates data (location, size, cost of construction, maintenance and operation) on long Australian urban road tunnels exceeding 1 km in length with opening dates up to 2020. An understanding of traffic behaviour, demand and toll revenue leads to estimations of return on investment and costs. Operating constraints and parameters; traffic flow, pollution and energy consumption are used to evaluate the performance of the tunnels along with their safety (accidents and fire) record.