BENGALURU: For the first time, a new road has been constructed to facilitate Underground Corridor works on Metro Phase-II. Running for 600 metres on Bannerghatta Main Road, it was thrown open to the public a week ago. Two original stretches of the road, running up to 900 metres, have now been shut for traffic. The Underground Corridor runs for 13.92 km between Dairy Circle and Nagawara on the 21-km Red Line (Nagawara-Gottigere) of the Bangalore Metro Rail Corporation Limited. The underground portion will have 12 Metro stations.