Construction of the 13 stations and ventilation shafts on Section IV of Metro Line 9 in Barcelona, part of the L9 macro project with a total of 52 stations, 20 of which are interchanges. The majority of the shafts have a diameter of 26 m and their depth ranges from 28 to 60 metres.
The works on this section are in 3 phases:
Phase 4a: covers the stations Can Zam, Singuerlín, Església Major Fondo and Can Peixauet (Santa Coloma de Gramanet).
Phase 4b: comprises the stations Gorg, La Salut, Llefià (Badalona) and Bon Pastor (Barcelona).
Phase 4c: finalized by the construction of the stations 11 Setembre, Santa Rosa, Sagrera-Honduras and Sagrera-TGV (Barcelona).