The Mumbai Trans Harbour Link Road

The Mumbai Trans Harbour Link Road

The Mumbai Trans Harbour Link Road, the longest sea link in India, will likely be open to the public towards the end of 2023.

The total length of Mumbai Trans Harbour Link (MTHLis about 21.8 km, sea length about 16.5 km and land length about 5.5 km. MTHL aims to connect Mumbai with Navi Mumbai in order to mitigate traffic congestion and promote economic development.

Key features MTHL

  • It connects Mumbai to the mainland:
    • It starts from Sewri in Mumbai to Chirle in Navi The 21.8-km-long sea link is the longest sea bridge in India and the tenth longest in the world.


The 30.1 metre wide, six-lane bridge is being built at a cost of over Rs 17,800 crore.

  • For the first time in india Orthotropic Steel Deck technology has been used
    • The sea link passes through one of the busiest navigational channels leading to Nhava Sheva Port. Orthotropic Steel Decks are special steel decks that enable a span (distance between two piers) that is up to three times longer than the norm.


Mumbai Metropolitan Region Development Authority or MMRDA is the implementing authority for the project, which is mostly financed by the Japan International Cooperation Agency (JICA).

MMRDA is a Maharashtra government agency.

Thanks to the Open Tolling System, Vehicles would not have to stop on the bridge for paying toll.

The MTHL was planned around 30 years ago to speed up the traffic between Mumbai and Navi Mumbai and also facilitate the traffic from Mumbai to Pune and Goa.