Concept
Sustainable urban infrastructure expands on the concept of urban infrastructure by adding the sustainability element with the expectation of improved and more resilient urban development. In the construction and physical and organizational structures that enable cities to function, sustainability also aims to meet the needs of the present generation without compromising the capabilities of the future generations. SDG 9, of the international sustainable development goals set by the United Nations General Assembly, deals with infrastructure, however, infrastructure is a building block for the rest of the SDGS. Therefore, the achievement of sustainable infrastructure is of significant concern in multiple areas of society. The sustainable development of urban areas is crucial since more than 56% of the world's population lives in cities. Cities are in the lead of climate action, while being responsible for an estimated 75% of the world's carbon emissions. A bibliometric study, published in 2019, of the evolution of research regarding sustainable urban infrastructure emphasizes that this concept continues to grow in the research community and change in scope as technology improves. According to the College of Engineering and Applied Science of the University of Colorado Denver, urban infrastructure refers to the engineered systems (water, energy, transport, sanitation, information) that make up a city. Not solely based on evaluating utilities, sustainability efforts in urban infrastructure seek to combat global warming and municipal waste, as well as encourage economic prosperity. Socioeconomic implications of these efforts often involve policy and governance in the implementation of sustainable infrastructure, and their variation results in different programs sized on national, regional, or more local scales. Challenges resulting from increasing population growth have generated a need for sustainable infrastructure that is high performing, cost-effective, resource-efficient and environmentally-friendly.
