The closure disrupted a key link between Vasant Vihar and the airport, forcing vehicles onto the nearby service road. New Delhi: The old Rao Tula Ram (RTR) Flyover, a key route connecting South Delhi to Indira Gandhi International (IGI) Airport, will reopen to light vehicles on Tuesday after repairs to its damaged section are complete.Delhi Public Works Department (PWD) Minister Parvesh Verma inspected the repair work on Monday along with senior officials.