sentences:  These plans were heavily criticized by mayor heading the preceding city administration.On March 20, Croatian minister for transport and infrastructure Oleg Butkovic visited Split Airport and stated that the 7 km of new tracks necessary to connect the airport to Split with rail are in the planning process by Croatian Railways-Infrastructure and that he hopes that the work will commence in 2021.In early April, Croatian Railways-Infrastructure published an open bid for plans to renovate Split railway tunnel and to build an underground station "Split-H.B.Z."