The Mumbai Trans Harbour Link (MTHL) Road Bridge connects the Mumbai with Navi Mumbai. It is the longest sea bridge in India. The bridge will begin in Sewri, South Mumbai and cross Thane Creek north of Elephant Island and will terminate at Chirle village, near Nhava Sheva.

The MTHL Bridge gives a faster connectivity with proposed Navi Mumbai International Airport, JNPT Port, Mumbai – Pune Expressway and Mumbai – Goa Highway. On Mumbai side, Connectivity with Coastal road is planned through Sewri Worli Elevated Connector project.

The sea link will contain a 6-lane (3+3 lane) highway+1 emergency lane on both side.

There are 7 nos of OSD (Orthotropic steel Deck) spans of length 90m to 180m which are used on bridge first time in India

There are Interchanges, at Sewri in Mumbai, Shivaji-Nagar and SH-54 in Jasai and at Chirle on NH-348.

The Project is being implemented using many unique products and state-of-the-art construction methods.

MMRDA appointed M/s AECOM Asia Company Ltd. - PADECO Co. Ltd. - Dar Al-Handasah - TY Lin International consortium as General Consultant for the MTHL Project in December 2016.