Spain’s Atocha-Chamartín tunnel to be completed by end-2016 April 21, 2016 | Europe News The 7.3-km tunnel from Atocha to Chamartín serving the high-speed rail lines entering Madrid from the north and south is expected to become operational by end-2016. Currently, track-l... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password