Longitudinal and transverse drainage of the main double-track trunk, the Quintanilla tunnel, the two single-track branches and the route of the main channels and streams intercepted by the High Speed Line (HSL) platform designed by AECOM for ADIF in the Miranda de Ebro section (Burgos – Álava).

• Main trunk 15.5km
• Quintanilla Tunnel 1.9km
• Single-track branches: 8.3km