Marine Drive widening plan proposes sea reclamation for Orange Gate tunnel traffic

A proposal by the Mumbai Metropolitan Region Development Authority (MMRDA) involves reclaiming 2,298 square metres of the Arabian Sea along a 300-metre stretch of Marine Drive near Girgaum Chowpatty to widen the road and accommodate traffic from the upcoming Orange Gate–Marine Drive tunnel. The project, estimated to cost around Rs 40 crore, will see the existing eight-lane carriageway expanded to 13 lanes at the point where the tunnel is planned to surface, and will also make room for a wider public promenade.

The widening is an integral part of the 9.96-kilometre Orange Gate–Marine Drive tunnel project, which aims to provide seamless connectivity between the Eastern Freeway and the Mumbai Coastal Road. The six-lane tunnel, passing beneath the city, will emerge near Girgaum Chowpatty before merging with the existing Marine Drive road. Planners say the additional lanes are necessary to prevent congestion where tunnel traffic meets surface traffic.

The MMRDA has stated that the reclamation will take place on the seaward side, creating five new lanes adjacent to the current road. The promenade, a popular waterfront stretch, will also be extended, providing additional public space. The authority believes the road widening will improve traffic flow and reduce bottlenecks in the densely populated South Mumbai area.

The Orange Gate tunnel is one of several large infrastructure projects intended to decongest the island city. When completed, it will link the Eastern Freeway, which runs along the eastern waterfront, to the Coastal Road, a major artery along the western coast. This north-south corridor is expected to cut travel time significantly and ease pressure on existing roads. The reclamation at Marine Drive is a necessary step to ensure the tunnel integrates smoothly.

Environmental clearances and coastal regulation zone norms will apply, and the MMRDA is expected to seek the required approvals. Reclamation projects along Mumbai’s shoreline have historically drawn scrutiny from environmentalists and citizens’ groups concerned about coastal ecology, but authorities maintain that such works are designed with mitigation measures. Detailed project reports will be made available for public consultation as per statutory requirements.

The timeline for the reclamation and the overall tunnel project has not been specified in the current proposal. The MMRDA is likely to issue tenders once all approvals are in place. Local residents and commuters are closely watching the developments, given the area’s iconic status and heavy daily traffic.

Marine Drive, a 3.6-kilometre promenade and road, is a landmark in Mumbai and a critical transport link. Its last major reclamation was carried out in the first half of the 20th century, shaping the present-day shoreline. The new plan marks another alteration, this time to serve modern mobility demands.