Sustainable urban infrastructure refers to infrastructure systems designed and constructed in such a way as to achieve long-term economic, social, environmental, and institutional sustainability over their lifespan. Such systems may include nature-inspired structures or be constructed using conventional methods.
Building with nature rather than against it provides cities with numerous advantages. These benefits include improved air and water quality, higher property values, energy savings through energy efficiency measures and climate resilience savings, cost reduction through energy conservation efforts and cost savings for climate resilience measures, etc.
Green Infrastructure
Green infrastructure uses natural systems to address urban challenges while supporting biodiversity and minimizing ecological footprints. It includes everything from urban green roofs and walls, parkways and corridors, gardens and waterways as well as stormwater solutions such as rain gardens, bioswales and permeable pavement.
These solutions reduce urban heat islands, promote evaporative cooling and help create thermally balanced cities which are comfortable to live in during both hot and cold weather. Furthermore, these solutions also improve air quality, reduce pollution levels and support local ecosystem services such as pollination and carbon sequestration.
Green infrastructure also helps support local economies by creating jobs in industries like landscaping, engineering and architecture, while offering tax incentives for green projects. A recent sports development in Emeryville, CA used soil cells and tree roots to capture stormwater runoff, relieving pressure on their municipal system while qualifying them for a water efficiency construction credit. Furthermore, research shows how accessing green spaces provides mental/physical community health benefits as well as building identity and place.
Waste Management
Urban areas face one of the greatest challenges in terms of waste management: managing massive quantities of trash. Poor waste disposal practices lead to pollution and environmental degradation that threaten human health; improperly discarded garbage attracts rats that spread disease while piles of rubbish release toxic gases into the atmosphere and landfills can leach harmful chemicals into soil and water bodies.
Additionally, cities with visible garbage problems tend to draw less tourists, which can have devastating repercussions for local economies that rely heavily on tourism as a source of revenue. Thankfully, sustainable waste management practices offer solutions by recycling and responsibly disposing of waste products.
Sustainable waste management practices for construction and demolition (C&D) can contribute to creating cities that are both eco- and economically friendly. Such practices include installing modular building systems that reduce waste as well as design planning strategies that prioritize using resilient recyclable materials.
Water Management
Sustainable water management entails providing cities with high-quality, cost-effective drinking and wastewater services that minimize environmental impacts while meeting quality benchmarks. Strategies incorporating life cycle thinking to assess resources as they pass through an urban network may also contribute.
Natural vegetation contributes significantly to air and watershed health by filtering pollutants out of the atmosphere and soil while providing habitats for wildlife. Urban green spaces and corridors help alleviate urban heat islands, decrease flood risk, and enhance biodiversity.
Green infrastructure such as rain gardens, green roofs and permeable paving help reduce stormwater runoff by relieving strains on sewer systems and replenishing groundwater levels. These innovative solutions present new opportunities to enhance environmental wellbeing.
In order to provide underserved communities with high-quality and safe drinking water, the Mayor’s Office of Sustainability is co-leading a task force which will install 500 public water fountains and bottle refillers by 2025. These investments will offer healthier alternatives than single-use plastic water bottles while cutting wasteful spending costs for the City and saving money at once.
Transportation
Integrative urban planning that prioritizes sustainable multimodal transport methods of moving both people and goods provides more flexibility and accessibility for everyone. It reduces vehicle use on the road as well as energy used to power them, thus decreasing congestion and emissions. Furthermore, such planning allows homes, offices, and civic buildings to be closer together for maximum land use efficiency and reduced transport needs.
Implementing sustainable transport systems requires significant investments in electric vehicles, infrastructure and charging stations – but their upfront costs can often be lower than traditional alternatives, while long-term savings from reduced maintenance costs will more than compensate.
Sustainable modes of transport like walking and cycling are an integral component of climate action, while their health benefits are considerable. A sustainable transport system provides access to jobs and services for those without cars as well as giving elderly and low-income populations greater mobility.