The Mumbai Trans Harbour Link, officially known as Atal Bihari Vajpayee Sewri–Nhava Sheva Atal Setu, is a monumental infrastructure project connecting Mumbai with its satellite city, Navi Mumbai. This 21.8 km long, 6-lane elevated highway bridge not only sets records as the longest sea bridge in India but also stands as a symbol of progress and connectivity. Inaugurated by Prime Minister Narendra Modi on January 12, 2024, the bridge represents years of planning, challenges, and triumphs in urban transportation development. This comprehensive exploration delves into the history, planning, and execution of this transformative project.