The Missing Link on the Mumbai-Pune Expressway has set a new benchmark in highway engineering with Asia's widest road tunnel measuring 23.75 meters and accommodating eight lanes. Located 170 feet below Lonavala Lake, the twin tunnels were constructed under challenging conditions to avoid disturbing the water table. The project also features the Tiger Valley cable-stayed bridge, which rises 170 to 180 meters high, designed to withstand the harsh monsoon winds of the Sahyadri mountains. Spanning 640 to 650 meters, this bridge is among Asia's tallest. The Missing Link replaces a notoriously difficult stretch of road that often turned a three-hour drive into a five-hour ordeal. Years of construction delays were attributed to environmental clearances and the complexities of tunneling beneath a live lake. Despite these challenges, the project promises to significantly improve travel safety and efficiency for the lakhs of vehicles that traverse the expressway each week.