In line with the TEN-T guidelines, the Atlantic and the Mediterranean corridors should in the future be completed by the Sines/Algeciras-Madrid-Paris freight axis which crosses the central Pyrenees via a low elevation tunnel.
I gcomhréir le treoirlínte TEN-T, ba cheart go gcríochnófaí conairí an Atlantaigh agus na Meánmhara amach anseo trí ais lasta Sines/Algeciras-Madrid-Paris ina dtrasnaítear lár na bPiréiní trí thollán iseal-ingearchló.