All railway projects
Barcelona Metro L9/L10 Completion (Central Section)
Spain · Europe · Metro
Under Construction VerifiedCapex: €6.27B
Project overview
Completion of the still-unbuilt central section of Barcelona Metro L9/L10 (Zona Universitaria area through to Sagrera/Gracia), the final phase needed to connect the whole 47.8 km L9/L10 network into Europe's longest automated metro line. Includes new stations and a single large-diameter deep bore under central Barcelona.
Type
Metro
Country
Spain
Region
Europe
Status
under construction
Investment
€6.27B
Contractors & suppliers
- GISA (Gestió d'Infraestructures SAU)project_management · Generalitat de Catalunya agency managing L9/L10 infrastructure construction. Central section works valued at >€900M. TBM to resume boring fall 2025, completion fall 2026.
- ifercat (Infraestructures Ferroviàries de Catalunya)project_management · Owner of L9/L10 infrastructure. Generalitat entity.
- Alstomrolling_stock · Series 9000 steel-wheeled automated trains for L9/L10. GoA4 driverless. 22 additional trains to be transferred from L2 when central section opens.
- Herrenknecht + NFM Technologiestunnelling · Supplied TBMs for tunnel boring: 11.95m diameter single-bore tunnel (double-deck configuration unique to L9). 5 TBMs total across project history.
- TMB (Transports Metropolitans de Barcelona)client_employer · Metro operator. Will operate L9/L10 as GoA4 automated line.

