Transport infrastructure is a pivotal pillar to facilitate and impede social, economic, and environmental aspects worldwide and influence Government and international agencies' decision-making. Every continent is combating to make sustainable transport adopting versatile action, policy and governance such as net zero-emission, zero waste, zero harm, vision zero and many more to save life and earth. Europe, America, Australia, and many other countries adopt green transport to improve the environmental footprint, health and wellbeing, protect the economy, and efficiently meet the future sustainable demand for the human being. However, a tiny contribution is hardly exposed to literature about the neighbourhood animals fearlessly associating with humans affected in Built Environment. The study brought a few cases about the fauna crossing of the major urban projects from the City of Cockburn; a Western Australian growing local government where state and major local projects are currently being implemented. The study has mapped the major road infrastructure by exploring historical data and aerial imagery and document analysis in Cockburn. Secondly, it has examined the road design consideration and design approaches to how the built environment could be more friendly and sustainable for all human and living beings using design instruments, audit reports, project report. The study showed that road authorities are building infrastructure to meet the community's growing demand; however, with a little contribution in fauna crossing that makes our environment more green and vibrant green community. The study concludes that the findings will be useful to fill literature gaps through a context-sensitive approach towards sustainable Built Environment from Perth, Western Australia. The closing analysis and discussion will also offer some potential tonics for Environmental impact assessment, protection and mitigation.