Improved reliability in planning large-scale infrastructure project delivery through Alliancing

PurposePrice reliability for complex and highly complicated infrastructure projects is problematic. Traditional project delivery approaches generally fail in achieving targeted end cost reliability. However, integrated project delivery (and particularly Alliancing), develop a far more reliable and robust project delivery plan and outturn time-cost targets. This paper aims to explore why this may be the case.Design/methodology/approachThis case study investigated the project design, planning, cost/time estimation approach and how risk/uncertainty was dealt with. Five senior project delivery experts from an organisation that delivers multi-billion-dollar infrastructure projects in Australia were interviewed. These five experts collectively had 100+ cross-disciplinary experience years delivering complex infrastructure projects.FindingsAlliancing adopts a radically different approach to project design, time/cost planning and risk assessment and management to traditional project delivery approaches. Key findings explain how the project alliance agreement designs-in processes that maximises team integration and collaboration. Analysis concludes that design thinking is used to craft and shape collaborative behaviours and project governance. Additionally, including project owner and facilities operator representatives in the project team adds valuable insights, expertise and knowledge contributing to planning reliability.Research limitations/implicationsThis study is exploratory and focussed on complex infrastructure projects so findings cannot be generalised.Practical implicationsWe unpack Alliancing processes that develop the target outturn cost plan, comprising a holistic and realistic plan to design a project to meet expected project outcomes. This case study may serve as an exemplar for complex project delivery.Social implicationsThis paper illustrates how Alliancing more effectively delivers best value than traditional procurement approaches through its TOC-TAE processes.Originality/valueThe paper contributes to the scant existing academic literature analysing these processes. Its novel contribution is explaining how Alliancing treats unexpected events that in traditional delivery forms trigger expensive and time-energy-wasting disputation. This case study may serve as an exemplar for complex project delivery.