The Moscavide and Encarnação Stations are in-serted in the new extension of Lisbon’s Red Sub-way Line, connecting the Oriente Subway Station with Lisbon’s International Airport, where is now located the last station of this line. The works started in 2007 and are now at their final stage. The Moscavide Station is located at the João Pin-to Ribeiro Street and comprised a cut-and-cover excavation, with the exception of the East end where, due to surface traffic restrictions, an un-derground gallery using the NATM method was built. The Encarnação Station is located at the Capitão Tenente Oliveira e Carmo Street and was also con-structed by means of a cut-and-cover excavation method. Due to greater surface restrictions, it was necessary to materialize two large underground galleries at the station’s ends. Figure 1 depicts the plan layouts of the two stations with the indication of the galleries. This paper presents the alternative solutions de-veloped for these underground galleries, which were mainly imposed by the necessity to recover some of the existing delay in relation to the estab-lished contractual deadline. This goal was achieved by studying the possibility of the execu-tion of the galleries from the subway tunnel, per-mitting thus a faster development of the works concerned with the excavations of the main body of the station and, specially, the anticipation of the works associated with its internal structure, since the only works left to be done from inside the main excavation were the soil treatments above the vault of the galleries and at the face of the excavation.