 Cintron served as mayor Ponce from 1969 to 1973.During his administration the city built the Juan Pachín Vicéns Auditorium, moved the Ponce Municipal Library to a new facility next to Teatro La Perla, re-organized the Archivo Histórico de Ponce, enlarged the Avenida Las Américas roadway, and opened the Centro Gubernamental de Ponce at Avenida Las Americas and Avenida Hostos.Under his administration the Francisco Montaner Stadium was also remodeled.