Brenner Autobahn Brenner Autobahn The Brenner Autobahn ( or , ) refers to a major European truck route, which connects Innsbruck in Austria to Modena in northern Italy. Numbered as the A13 in the Austrian section, the motorway is relatively short and entirely located within the state of Tyrol. Upon reaching the Italy-Austria border at the Brenner Pass (), the motorway becomes A22 in Italy and runs to Modena, where it connects to the A1 motorway between Milan and Rome. It is part of the major European route E45. The historic Brenner Pass is the one of the lowest among the Central
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