New Delhi, Feb. 5 -- Following months of discussions, the Union ministry of railways has agreed to allow Delhi government's Public Works Department (PWD) to move ahead with its plans to start construction for the last remaining underpass of the Pragati Maidan tunnel network and make it operational for light motor vehicles, officials said on Wednesday. PWD has now been asked to submit a plan to the Railways following which an overhead railway line will be blocked for around 40 days to allow construction, officials said. "PWD is in the process of making a detailed plan with the schedule of the works and what is left. We will share the plan within the next few weeks and will start work as soon as we receive the approvals," PWD minister Parvesh...