The Airport-Washermanpet line of Chennai Metro rail already passes under the cooum river. And a recently opened line of Kolkata metro passes under the Hoogly river. Don't give wrong information.
Why is Indian govt celebrating Kolkata as the first underwater metro in 2024? because the Coovum tunnel is not regarded as underwater. That way, every city has some canal or stream over their metro line. Adyar river and Chetpet lake are considered real water bodies hence they will be Chennai’s first underwater metro tunnels as reported by Times of India and others too.
CMRL phase 2 was approved in 2019, and the project will ultimately be funded by central government. However, efforts of current govt are also appreciated
Total cost of phase 2 is approximately 60,000 crore. 60 percentage of total cost is funded by japanese international cooperation agency through long term loan. Remaining 40 percentage of total cost is funded by state and central government . Both centre and state has 50:50 equity. tamilnadu gov allocated 12000 crore. Central gov allocation is awaited.
