Kolkata, July 15 -- The much-awaited Kolkata Metro's Bowbazar segment linking Howrah and Sealdah stations is expected to be operational for commercial services with the flagging off by Prime Minister Narendra Modi on Friday (July 18).

PM Modi is expected to arrive at Durgapur, the industrial city of West Burdhan for a BJP open rally, and is expected to unveil Kolkata Metro's vital link service virtually, officials said today.

The 2.5km underground link of this over 300 years city is the most challenging task for the executive authorities of Rail Nigam Ltd, which had faced many hurdles like agitations, space management and largely geographical as the area witnessed cave-ins several times forcing rehabilitation of the people on the surface....