Mumbai-Ahmedabad high speed rail project has been sanctioned with technical and financial assistance from Government of Japan. National High Speed Rail Corporation Limited (NHSRC) has been formed in February, 2016 to implement Mumbai-Ahmedabad High Speed Rail Corridor project.
The feasibility study of Japanese International Cooperation Agency (JICA) had recommended that 65% of the corridor be constructed on embankment, 28% on viaduct & bridges, 6% on tunnel and 1% on cutting. Final decision on the extent of elevated corridor is dependent on the technical feasibility and land availability. According to preliminary assessment of JICA, additional cost implication of fully elevated corridor is approximately ₹10,000 crores.