FCC Construcción and FCC Industrial have won the contract to build the underground station at Sant Feliu. The new building, which will cost €22 million, will be built near the site of one of Spain's oldest passenger buildings, which was demolished a year ago to make way for the underground works.

The new building will provide access to the platforms in the tunnel that will conceal the tracks running through the capital of Baix Llobregat, with a spacious lobby on an intermediate floor. The same contract also includes civil protection and safety facilities for the entire underground section.