An engineering marvel, the Mumbai Trans Harbour Link (MTHL), also called the Atal Bihari Vajpayee Sewri–Nhava Sheva Atal Setu, was officially opened on January 12, 2024. It links the bustling metropolis of Mumbai with its satellite city, Navi Mumbai, and spans 21.8 kilometers, making it the longest sea bridge in India and the 12th longest in the world.

Advanced Engineering

Innovative Design: This massive bridge has a 27-meter-wide, 6-lane, grade-separated motorway with two emergency exit lanes and cutting-edge safety systems. Orthotropic steel decks, which allow for longer spans and lower weight, are incorporated into its innovative design to minimize the structural influence on the surrounding ecosystem, particularly flamingo migration patterns.

Advanced Construction: The MTHL was built in three major portions using 830,000 cubic meters of concrete, 96,250 tons of structural steel, and roughly 165,000 tons of reinforcement steel. At 180 meters, the bridge's longest steel span is an impressive engineering achievement.

Environmental Factors

Reducing Impact: ₹330 crore has been set aside specifically for environmental initiatives, such as mangrove planting, tree relocation, and ongoing air and water quality monitoring. The bridge also has vision and noise barriers to safeguard nearby animals, especially migrating birds.

Community Involvement: A compensation program has been put in place to help local fishermen who have been impacted by construction, guaranteeing that their means of subsistence are protected while the bridge is in service.

Construction Milestones: The bridge was built in three sections using 830,000 cubic meters of concrete, 96,250 tons of structural steel, and 165,000 tons of reinforcement steel. Surprisingly, the majority of the structure's components were prefabricated and transported for installation, with only 3% of it being constructed on-site

Special Qualities: Noise and Vision Barriers: installed over a 6-kilometer area to reduce noise pollution and save local species.

Bird-Watching Platform: To encourage ecotourism and conservation, a 5.6-kilometer temporary access bridge was converted into a bird-watching platform.

Safety Infrastructure: Commuter safety is improved by features including CCTV surveillance, emergency calling boxes, and a speed violation detection system.