reached as far as Escuela Militar. In March 1978, Line 2 was opened. Its initial section ran at ground level from Los Héroes to Franklin. By December, the second segment of the line was opened, running underground towards the south along the Gran Avenida up to Lo Ovalle. Project changes Despite the fast growth of the network, the severe economic crisis that affected the country in 1982 halted the original plans. Furthermore, studies showed that southeast Santiago was becoming more populated than the north end of the capital, area that was then covered by the planned extensions of the service. In order to supply future demand, the layout for Line 2 was changed and the extension would start at Los Héroes and go around the Civic District, crossing Line 1 again at Baquedano to head south through Vicuña Mackenna. Meanwhile, Line 3 was projected through Independencia and Irarrázaval to supply the northern area that Line 2 was supposed to run. However, these plans were affected once again when an earthquake struck the Chilean Central Valley on 3 March 1985. Most of the funds destined for the construction of the Line 2 extension and Line 3 were used to rebuild the city. The opening of two new stations towards the north in 1986 (Santa Ana) and 1987 (Puente Cal y Canto) were the only finalised works from these plans: Santa Ana and Mapocho stations on Line 2. The latter would change its name later, as remains of the old Calicanto Bridge –emblem of the city for over a century– were discovered during the excavation process. That same year, the Metrobús service was launched with services operating from Escuela Militar, Lo Ovalle and Las Rejas. Institutionally, the management of Metro de Santiago was changed at the end of the decade. The former General Directorate of Metro, a branch of the Ministry of Public Works, became a state-funded public company, Metro S.A., with the provisions of Law 18,772 published on 28 January 1989. Following the economic recovery after the second miracle, the metro's expansion plans resurged. Population growth in the southeastern area of the capital became unstoppable during the 1980s, and La Florida became the most populous commune in the country, thus the construction of a new line to supply that area was paramount. The first plans were drawn in 1989 and it was officially announced in 1991 by President Patricio Aylwin. This