Sustainability in Mega-Infrastructure Projects: Pathways to Achieving Net Zero Emissions in London.

Abstract

Sustainability has become a critical priority in mega-infrastructure projects as the United Kingdom aims to achieve net-zero carbon emissions by 2050. This research investigates the role of engineering management practices in enhancing sustainability and supporting net-zero emission objectives within UK mega-infrastructure projects. A quantitative research approach was adopted based on positivist philosophy, using structured survey questionnaires distributed to infrastructure professionals. A total of 42 responses were collected, with 20 valid responses used for statistical analysis.

The findings indicate that engineering management practices such as energy efficiency measures, lifecycle assessment, stakeholder engagement, and collaboration with environmental agencies contribute positively to sustainability outcomes. However, advanced technical solutions such as carbon capture, renewable energy integration, and low-carbon materials are not yet widely implemented. The study also identifies key implementation barriers, including regulatory coordination challenges, resource allocation conflicts, stakeholder management issues, and technical limitations.

This research contributes to the existing body of knowledge by providing empirical evidence on the relationship between engineering management practices and sustainability performance in mega-infrastructure projects. An evidence-based framework is proposed to guide practitioners and policymakers in improving sustainability outcomes through early design integration, effective stakeholder coordination, and the use of digital tools. Despite limitations related to sample size and geographic focus, the findings offer valuable insights for future research and practical implementation aimed at achieving net-zero emissions in large-scale infrastructure development.