India is poised to construct its first underwater rail-road tunnel, a transformative infrastructure project aimed at enhancing connectivity and reducing travel times between critical regions. The concept involves building a dual-purpose tunnel beneath a water body that can support both rail and road traffic, showcasing cutting-edge engineering and design. The 15.8km twin-tube underwater tunnel will run beneath the Brahmaputra River in Assam and will facilitate the movement of both road and rail vehicles. This pioneering project will enhance strategic access and regional integration by linking Gohpur on one bank with Numaligarh on the other.
The tunnel is expected to support seamless transit, relieve traffic congestion on overland routes, and create a more resilient transport corridor. Though detailed technical specifications, route alignment and construction timelines are still being finalized, authorities say the project will incorporate modern safety features, advanced ventilation systems and structural resilience against seismic and hydrostatic pressures.
Experts believe the underwater tunnel could become a model for future multimodal transport solutions in India, enhancing freight and passenger movement while demonstrating the country’s growing capability in large-scale infrastructure execution.
Planners also note potential economic benefits, including job creation during construction, improved regional trade flows, and growth in tourism and commerce along the connected corridors. If implemented successfully, the underwater tunnel could redefine India’s transport landscape, offering a faster, smarter and more integrated travel experience.
