Transport is one of the influential components in the built environment that directly and indirectly affects our daily life: economic, education, land use, health and wellbeing, goods and services, job, culture, and social, environmental, and political context. An Integrated Transport Planning aims to achieve a positive outcome for these aspects ensuring sustainable mobility, including public transport, walking, cycling, freight, private vehicles and the street network, especially for community and neighbourhood, government and international agencies' decision-making. This study brought a case example of the 6.3-kilometre long, and 60-feet (18.3m) wide link road between Zia Colony (Opposite to Hotel Radisson, Dhaka) to Mirpur Cantonment constructed under the Special Work Project of Army Engineering Core in Dhaka, Bangladesh. The study detailed the road planning, design, execution and mapping the aerial history, socio-economic, changing footprint in the essence of time, compared to a few megacities. The research has shown that efficient planning, design, and building road network, especially in an urban area can shape the built environment, a more infill compact city, a better neighbourhood. The government had the opportunity to achieve safety and progress towards zero philosophies (net zero-emission, vision zero, zero harm, zero waste) applying context-sensitive policy governance. The study concludes that megacities have experienced a dramatic shift from rural to urban areas, especially in developing countries, such as Bangladesh, where authorities require fast, comprehensive strategic planning and direction. Without it, there will be very little room to rectify the problems with the missing links. The findings will fill literature gaps through a network planning of the infill design or compact city. The closing analysis and discussion will also offer some potential tonics for megacity planning (tailoring consideration between heroic and robotic), where the conventional planning process not always function.