Underground Civil Works

Bilbao Underground. Line 2. Ariz – Basauri Section

Owner: ETS Eusko Trenbideak Sarea – Metro Bilbao

Client: UTE Ariz – Basauri

One section of Line 2 of Bilbao Underground, between Etxebarri and Basauri. Work performed in UTE (temporary consortium). 1.900 metres of line tunnel with an average excavated cross-section of 60 m² plus two caverns with a length of 120 m and a cross-section of 190 m2 with the help of two heavy-duty miners. 11 shafts of 3.6 metres in diameter and 16 to 42 metres in depth, constructed by raise-boring and 3 shafts using mechanical means.