Line 9 is a completely automated line of the Barcelona Metro network that is currently under construction, with 24 stations open in Barcelona and El Prat de Llobregat, L'Hospitalet de Llobregat, Badalona and Santa Coloma de Gramenet suburbs, since December 2009. The line is currently disconnected in two branches, with a connecting part between the two yet to be built. The Aeroport T1 – Zona Universitària section is called L9 South, and the La Sagrera – Can Zam portion L9 North. Upon completion, it will be the longest underground metro line in Europe.

Bon Pastor is a Barcelona Metro station named after the neighbourhood of the same name where the station is situated, part of Barcelona's district of Sant Andreu. This neighbourhood, one of Barcelona's most deprived areas and until very recently made up mostly of cheap public housing has been undergoing some renovation. The station was opened on 18 April 2010 with the opening of the line from this station to Gorg and Can Peixauet, enabling this neighbourhood to be connected with the metro network. It is served by TMB-operated Barcelona Metro lines L9 and L10.