# Spanish regional demands for rail corridor improvements > Live situation record from CLSTR: https://clstr.news/situations/spanish-regional-demands-for-rail-corridor-improvements > Updated: 2026-10-03T04:40:00.000Z. Sources: 13. Developments: 2. Four Spanish autonomous communities—Aragón, Castilla y León, Cantabria, and the Valencian Community—have issued the ‘Declaration of Teruel’ to demand improvements to the Cantabrian-Mediterranean railway corridor. The regional leaders are calling on the central government to replace plans for a single-track line with a high-capacity, double-track infrastructure using international gauge to better connect Mediterranean and Cantabrian ports. In addition to the corridor, regional leaders are advocating for the reopening of the Soria-Castejón railway line to integrate the Spanish interior into European transport networks. While current rail service in Soria is replaced by bus travel due to ongoing works on the Algeciras-Zaragoza highway, leaders emphasize that the Soria-Castejón connection is vital for long-term development. The initiative faces political friction, including disputes regarding the historical closure of certain lines. ## Timeline ### 2026-10-03: Spanish regions demand Mediterranean-Cantabrian rail corridor Four Spanish regions are advocating for the Mediterranean-Cantabrian rail corridor, with leaders calling for the reopening of the Soria-Castejón line to ensure regional connectivity. 2 sources. https://clstr.news/cluster/spanish-regions-demand-mediterranean-cantabrian-rail-corridor ### 2026-09-29: Cantabrian-Mediterranean Corridor: Four regions demand double-track rail Four Spanish regions signed the ‘Declaration of Teruel,’ demanding a double-track, international-gauge railway for the Cantabrian-Mediterranean Corridor to replace proposed single-track solutions. 11 sources. https://clstr.news/cluster/ciudad-real-allocates-nearly-3-million-euros-for-road-improvements --- Cite as: Spanish regional demands for rail corridor improvements. CLSTR, https://clstr.news/situations/spanish-regional-demands-for-rail-corridor-improvements