7 km underground extension between Plaza Elíptica and Conde de Casal providing metro capacity to key central Madrid areas. Includes five new underground stations and refurbishment of existing hubs. ACS Group · Acciona · News
Madrid Metro Line 11 Extension (Plaza Elíptica–Atocha–Conde de Casal) is a metro project in Spain, currently under construction.
Greenfield new corridor: new metro extension on new underground alignment.
Construction began in 2022, with completion expected in 2027.
The project has an estimated investment of €671M.