The Swiss have completed construction of which underground rail tunnel which is over 35 miles long ? This tunnel will provide a railway link through the Alps and will become operational in 2017.
Gotthard Road Tunnel Massif, the two other being railway tunnels, the Gotthard Tunnel (1882) and the Gotthard Base Tunnel (2016). All three tunnels bypass the Gotthard Pass, an important trade route since the 13th century. The pass road culminates about above the tunnel, at a height of , and is only passable in summer. In response to the automobile boom in Switzerland and other things, the Swiss government gave approval in July 1969 for the construction of the Gotthard Road tunnel. The tunnel would be longer than any existing road tunnel, and would provide a year-round road link from the Swiss Plateau to
Ceneri Base Tunnel safety and control systems commenced. During August 2017, the first sections of ballastless track were laid in the northern end of the eastern bore. The monthly progress update graphic is available online. Ceneri Base Tunnel The Ceneri Base Tunnel (CBT) is a railway base tunnel under construction in Switzerland's Canton Ticino. It passes under Monte Ceneri between Camorino in the Magadino Flat and Vezia near Lugano, and will bypass the current high-level rail route through the Monte Ceneri Tunnel. It is composed of two single-track tunnels, each long. It is another part of the New Railway Link through the Alps