High-speed Atlantic corridor. Portas Turnoff (Pontevedra). Stretch II: Portas-Vilagarcía de Arousa. Platform and Track.
- Contracting body: Directorate General of Railways. Ministry of Public Works.
- Location: Pontevedra (Galicia)
- Description: Construction of 6 kilometres of High-Speed double track. The Posadoiro tunnel is located in the stretch, which is 2.35 kilometres long, 1,615 m of which have been carried out in a mine and 740 m as a false tunnel. It also has a viaduct of 500 m. The total levelling for its execution is 244,900 m3 with 189,500 m3 of total embankment.