Mumbai, one of the world's most densely populated cities, is home to 21.6 million people. The city's transportation system, comprising cars, taxis, autorickshaws, BEST buses and local trains, struggles to keep up with the growing population and traffic congestion. The existing infrastructure is insufficient, leading to severe traffic jams, accidents, pollution and health hazards. While the Mumbai Metro has alleviated some pressure, it is not enough. The Bandra Worli Sea Link, introduced years ago, helped reduce travel time from the western suburbs to the main city, but more solutions were needed.

Borouge is proud to contribute to transformative projects like the newly opened Coastal Road and the Mumbai Trans-Harbour Link, which will significantly reduce travel time across the city.

Also known as Atal Setu, this 21.8-kilometre-long, 27-metre-wide, six-lane expressway connects Mumbai with Navi Mumbai, making it India’s longest sea bridge and the world’s 12th longest.

Because the bridge is located over the sea in an area with heavy rainfall, having a reliable drainage system was essential to maintain safety and prevent waterlogging and hydroplaning. Borouge and its customer Sangir Plastics Ltd played a vital role in this aspect. Sangir Plastics produced, supplied and installed, approximately 23.65 kilometers of 200-400 mm diameter pipes, and 19,500 fittings made of BorSafe™ HE3490LS for this impressive project. These pipes and fittings, with several customised connections manufactured to precise standards, reflect exceptional workmanship. They were critical in creating a reliable drainage system that keeps the bridge safe for high-speed travel, even during heavy rain, storms or seawater surges.

Built by Larsen & Toubro and Tata Projects, as the primary EPC Contractors, and financed mainly by the Japan International Cooperation Agency (JICA), the bridge was inaugurated by Prime Minister Narendra Modi on 12 January 2024. This landmark project, with a total investment of $2.1 billion, is engineered to accommodate up to 70,000 vehicles daily. The bridge begins in Sewri, South Mumbai, crosses Thane Creek north of Elephanta Island, and terminates at Chirle near Nhava Sheva in Navi Mumbai. It is linked to the Mumbai–Pune Expressway in the east and to the Coastal Road in the west.

The collaboration between Borouge and Sangir Plastics highlights the importance of using high-quality materials in infrastructure projects. Their contribution to the Mumbai Trans-Harbour Link project not only ensured the safety and efficiency of the bridge but also demonstrated the value of investing in durable and reliable solutions. This project serves as a testament to the impact that innovative materials and technologies can have on large-scale infrastructure and construction developments.

The use of BorSafe™ HE3490LS, a high-performance PE100 black compound, ensured the durability and reliability of the bridge’s drainage system. BorSafe™ material is known for its superior processability and long design life, making it an ideal choice for such a critical infrastructure project. The pipes and fittings made from BorSafe™ HE3490LS were designed and guaranteed to last minimum 30 years, tested according to international manufacturing and quality standards, highlighting the value of investing in durable and reliable solutions. “This project shows what’s possible when strong partnerships unite around a shared vision. The Mumbai Trans-Harbour Link is more than an infrastructure project. It represents improved lives, stronger community connections and a better future for the city,” said Mr. Sushil Mandhana, Director at Sangir Plastics.

The Mumbai Trans-Harbour Link is more than just a bridge; it is a lifeline for Mumbai's residents. By significantly reducing travel time, it enhances the quality of life for thousands of commuters, allowing them to spend more time with their families and less time stuck in traffic. The bridge's construction also created numerous job opportunities, boosting the local economy. For many, the bridge represents progress and a step towards a more connected and efficient city.