The Mumbai Trans Harbour Link (MTHL) is a 21.8-km sea bridge connecting Sewri in Mumbai to Chirle in Navi Mumbai, aimed at improving infrastructure and reducing congestion. Construction, which began in April 2018, is projected to be completed by November 2023, with a cost of approximately Rs 17,843 crores, largely funded by the Japan International Cooperation Agency. Upon completion, the MTHL will be India's longest sea bridge, capable of accommodating 70,000 vehicles daily and enhancing connectivity between key areas, including the JNPT port.