The Buenos Aires Metro consist of six lines -A, B, C, D, E and H- that extend approximately 63 km underground and have 90 operational stations. The subway authorities decided to increase the interconnection capacity between lines B, C and D.
This paper focuses on stages I and II of the first phase of the extension program, which involve: the construction of a shallow tunnel on soft soil that connects the stations of lines C and D, both located at the center of the city; and the construction of an access building that overlies the line C station and aims to interconnect the three lines stations at surface.
The details of the project, it's interaction with the existing tunnels and the as-built configuration of the structures are presented and discussed.
