The article examines the difficulties faced by global cities in effectively integrating governance and sustainability, using Bizerte, Tunisia as an example. Infrastructure governance and sustainability covers a range of issues, including the management, development, and maintenance of various infrastructure systems such as transportation, energy, water and wastewater, waste management, and public facilities. Some of the main challenges related to infrastructure governance and sustainability include limited funding and resources for infrastructure development and maintenance, lack of coordination and collaboration among stakeholders, environmental challenges, social and economic inequality, and rapid urbanization and population growth. To address these challenges, it may be necessary to develop integrated, cross-sectoral approaches that involve multiple stakeholders and prioritize the long-term sustainability of infrastructure systems. Strategies such as increasing investment in sustainable infrastructure, promoting public-private partnerships, implementing innovative technologies and management practices, and engaging with local communities to ensure their needs and perspectives are considered in infrastructure planning and decision-making could help promote resilient infrastructure governance.Combining new urban governance and sustainability goals with human well-being, global governance can provide a model for local governance. The primary obstacle to infrastructure governance and sustainability in Bizerte City is the insufficiency of funding and resources for infrastructure development and maintenance. This can lead to various problems, including infrastructure systems that are not adequately maintained or upgraded due to limited funding and resources, resulting in failures, disruptions, and safety hazards. The lack of investment in infrastructure can also lead to unequal access to essential services like water, sanitation, and transportation, which can have significant social and economic consequences. Additionally, inadequate infrastructure systems can worsen environmental challenges such as pollution and climate change, thus impacting the city's long-term sustainability. Furthermore, the shortage of investment in infrastructure can limit economic development opportunities, hindering the city's growth and competitiveness. Addressing the issue of inadequate funding and resources for infrastructure development and maintenance necessitates a coordinated approach from various stakeholders, including local and national governments, the private sector, and civil society organizations. This may involve strategies such as increasing public investment in infrastructure, promoting public-private partnerships, improving the efficiency and effectiveness of infrastructure management, and engaging with local communities to ensure their needs and opinions are considered in infrastructure planning and decision-making.A range of research methods are utilized to assess the efficacy of urban sustainability and digital infrastructure governance in Bizerte City. To evaluate these aspects, a combination of Field & Survey Experiments, and Qualitative Research could be implemented. Field experiments are used to examine the effectiveness of infrastructure governance and sustainability initiatives on the city's infrastructure, environment, and quality of life. For instance, a new waste management system, renewable energy project, or transportation infrastructure project can be tested through baseline measurements and comparison with post-implementation data to assess its effectiveness. Survey experiments are utilized to collect data on residents' attitudes, opinions, and behaviors regarding infrastructure governance and sustainability. Pre- and post-implementation surveys can be conducted to evaluate the impact of an intervention on residents' attitudes and behaviors towards aspects such as public transportation services, recycling, and water and wastewater services. Qualitative research techniques such as interviews, focus groups, and observations can provide a deeper understanding of the intricate social, cultural, and economic factors that influence infrastructure governance and sustainability. Interviews with local stakeholders such as government officials, business owners, and community leaders can offer insight into their viewpoints on infrastructure governance and sustainability issues in the city. The combination of these research methods will enable the evaluation of infrastructure sustainability from multiple perspectives, facilitating the identification of areas requiring improvement, the development of effective interventions, and the advancement of more sustainable infrastructure systems
