Overview
- The machine, which started work Thursday beneath the future Comillas station, is driving toward Conde de Casal at about 15 meters a day.
- Crews will run it nonstop with about 300 workers to install concrete rings as it advances roughly 5,593 meters.
- This first phase adds five stops, with new stations at Comillas and Madrid Río plus interchanges at Palos de la Frontera, Atocha and Conde de Casal, with service targeted around 2027.
- The regional government has budgeted more than €739 million for the project, including €586 million for the tunnel and five stations after a recent increase.
- On the same day, the regional president outlined a planned 8.2‑kilometer northern leg to Valdebebas with six stations and an estimated €880 million cost, with bidding steps due in the coming weeks and operation eyed for 2031.