Barcelona Metro line 9, Automated rapid transit railway line in Barcelona, Spain.
Line 9 of Barcelona Metro is an automated rapid transit system spanning roughly 28 kilometers and connecting multiple municipalities across the Barcelona metropolitan area. The railway uses a double-level tunnel design in which trains travel in opposite directions on separate floors within a single structure.
Construction of Line 9 began in 2002, with the first sections opening in 2009, marking a modern expansion of the city's public transportation network. The complete line was built in phases, with full service gradually becoming available between 2009 and 2015.
The metro line serves diverse neighborhoods, connecting educational institutions, residential areas, and commercial districts across five different municipalities.
The system operates fully automated without onboard crew and features safety doors at every station platform. Travelers should expect crowded conditions during peak hours and find that the service is straightforward to navigate.
The project was innovative for its time and employed a tunnel design with two stacked levels within a single bore, an unusual engineering achievement. This double-decker system allows traffic to flow in opposite directions while making efficient use of space beneath the city.
The community of curious travelers
AroundUs brings together thousands of curated places, local tips, and hidden gems, enriched daily by 60,000 contributors worldwide.
