Brenner Railway bypass was completed in 1994 to improve access to the Lower Inn Valley railway. The bypass consists of a 12.75-kilometre tunnel (Austria's longest) and aims to remove the bulk of the freight train traffic from Innsbruck. In Italy, several new sections have been built, removing sections of line with several short tunnels with small cross sections. These include the 13.159-metre long Sciliar tunnel opened in 1994, the 7.267-metre long Pflersch tunnel opened in 1999 and the 3,939-metre long Cardano tunnel opened in 1998. Following a sharp increase in freight traffic through the Brenner Pass (largely on road), the railway is
Brenner Pass Counts of Tyrol within the Holy Roman Empire. Emperor Frederick Barbarossa made frequent uses of the Brenner Pass to cross the Alps during his imperial expeditions of Italy. The 12th-century Brenner Pass was a trackway for mule trains and carts. Modernisation of Brenner Pass started in 1777, when a carriage road was laid out at the behest of Empress Maria Theresa. Modernisation further took place under the Austrian Empire and the Brenner Railway, which was completed in stages from 1853 to 1867. It became the first trans-Alpine railway without a major tunnel and at high altitude (crossing Brenner Pass at