Circular Economy Outcomes in Civil Infrastructure Projects – A Case Study at the Regency to Pym Street Project

Regency Road to Pym Street Project (R2P Project) comprises an at-grade motorway from the existing motorway infrastructure to the north (South Road Superway); an overpass of the motorway over Regency Road; and an at-grade motorway from Regency Road to Pym Street, transitioning to the lowered motorway infrastructure (Torrens Road to River Torrens Project). The Australian and South Australian governments have jointly committed $354.3 million to construct the Regency Road to Pym Street (R2P) Project as part of their overall commitment to build a non-stop North-South Corridor. The R2P Project is the first project in Australasia to obtain a certified Infrastructure Sustainability Council of Australia V2.0 Design Rating. The R2P Project is contractually required to achieve a Bronze rating at completion, however, the R2P Project has exceeded this requirement for the design phase, achieving a Gold level rating. Reduction of greenhouse gas emissions during the construction and operation of the R2P Project is achieved by: lower wattage road lighting; use of GreenPower at the Polonia Reserve Compound; and use of materials with lower greenhouse gas emissions (use of recycled asphalt pavement, reduced Portland cement concrete and recycled materials in kerbing). This chapter will showcase how circular economy was taken into consideration from design to construction, and the outcomes.