Its route covers the municipality of Etxebarri, the city of Bilbao, the right bank of the Nervión river and Uribe Kosta.

On November 11, 1995, Lehendakari José Antonio Ardanza opened the first 23 stations of the metro system between Casco Viejo and Plentzia.

The next year, on June 24, 1996, Gobela opened as an infill station between Areeta and Neguri, in the municipality of Getxo.

[2] On July 5, 1997, three new stations were opened: Santutxu, Basarrate and Bolueta; all in Bilbao.

[5] On 15 June 2020, Ibarbengoa station (between Bidezabal and Berango) opened to the public.