 In May 2008, crews constructed two tunnel boring machines at Giardinetti, and two months later the old Rome-Pantano railway was truncated at Giardinetti to allow restructuring part of the old surface line, which forms a part of the new metro.This section, from Montecompatri-Pantano to Parco di Centocelle, opened in 2014.The section between Parco di Centocelle to Lodi opened on 29 June 2015, one further station (San Giovanni) opened in May 2018.