The Mumbai-Ahmedabad Bullet Train project is making significant strides, with the 135.45 km long civil construction package progressing steadily. This section, stretching from Shilphata in Maharashtra to Zaroli village on the Maharashtra-Gujarat border, is the second-largest civil package of the high-speed rail corridor after Package C4, which spans 237 km in Gujarat. This segment features extensive infrastructure, including a 124.027 km-long viaduct and bridges, 36 crossings (with 12 steel bridges), and three major stations at Thane, Virar, and Boisar. Additionally, seven mountain tunnels and key river bridges over the Ulhas, Vaitarna, and Jagani rivers are under construction. Work on pier foundations and other structural elements is progressing at multiple locations. The foundation work for all three stations has already commenced, with Boisar station being the first to begin foundation casting. To facilitate construction, three casting yards are operational—two for segmental casting and one for full-span box girders, which are 40 m long. Notably, the first full-span box girder, weighing approximately 970 metric tons, was recently cast at a yard near Dahanu. Meanwhile, the construction of temporary access bridges over the Vaitarna, Ulhas, and Desai Khadi rivers is in its advanced stages. These temporary structures will play a crucial role in facilitating the movement of workers and machinery during the river bridge construction phase. With rapid progress on critical structures, the Mumbai-Ahmedabad Bullet Train project is steadily advancing, bringing India closer to its vision of a world-class high-speed rail network.