Project: On February 12 2016, a new section of the metro line 9 was put into service, from Zona Universitària to Barcelona – El Prat Airport, with the name L9 Sud. The section between Santa Coloma and La Sagrera will be renamed L9 Nord. The L9 Sud passes through the municipalities of Barcelona, L’Hospitalet and El Prat de Llobregat. The section connects the University Zone with Terminal 1 of the Aeroport del Prat, and serves areas that until now had no connection with public rail transport. The new section adds 20 km (19.6 km) to the existing metro network and 15 new stops, all accessible. A journey that takes place in 32 minutes, with a basic frequency of 7 minutes between trains on weekdays.
System: Clamp system based on Multitub to fix pipes in parallel, reducing the distance between and providing space-saving.