Karnataka and the Indian government will each meet 20% of the Rs 320.9bn ($US 3.3bn) project cost, with an external loan financing the remaining 60%.

Largely utilising existing alignments, the four-line network will serve 81 stations, with extra platforms and track doubling or quadrupling to provide additional capacity.

The four corridors include:

  • Kengeri - Bengaluru Cantonment - Whitefield (35.5km)
  • Bengaluru City - Yelahanka - Rajankunti (23.9km including 9.5km elevated)
  • Nelamangala - Mathikere - Baiyyappanahalli (39.9km including 18km elevated), and
  • Heelalige - Yelahanka - Devanahalli (61.4km including 14.6km elevated).

The network is due to be completed by 2025.

The state cabinet has also approved a revised alignment for the Bengaluru metro line from Nagawara to Kempegowda International Airport, which will now run via Hebbal and Jakkur. The change will increase the length of the line from 30 to 39km.

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