The project consists on the demolishment and complete replacement of the footbridges raised in the first floor and the existing communication porches between four detached classroom buildings making up the primary school Les Pruneres in Martorelles.

The new footbridges are enclosed and covered with a vented roof and metalwork with inner isolating air and colored glazing. Comfort is guaranteed with the existing possibility of natural ventilation by slated metalwork at both sides.