Ideas to build up a
limited-access road network with
grade separated interchanges had been developed already in the 1920s, including a "
Nibelungen" highway along the
Donau (Danube) river from
Passau to
Wien (Vienna) and further on towards
Budapest. Those plans however had never been carried out due to the lasting economic crisis that hit the country after the dissolution of
Austria-Hungary in 1918, exacerbated by the
Great Depression. The first autobahn on Austrian territory was the
West Autobahn from
Salzburg to
Vienna. Building started immediately after the Austrian
Anschluss in 1938 the annexation of Austria on order of
Adolf Hitler as extension of the German
Reichsautobahn-Strecke 26 from
München (Munich) (the present-day
Bundesautobahn 8). However, only including the branch-off of the planned
Tauern Autobahn had been finished on 13 September 1941. Construction works discontinued the next year due to
World War II. After the war delaying resistance by the
Soviet occupation forces as well as claims raised by
West Germany to the former
Reichsautobahn assets obstructed the resumption until 1954. Construction started in the
US-occupied zone of
Salzburg and
Upper Austria, partly relying on the pre-war planning, and were extended after the country gained full sovereignty by the 1955
Austrian State Treaty. The first section of the West Autobahn up to
Mondsee was opened in 1958, by 1967 the route between Salzburg and Vienna was completed. From 1959 onwards the
Süd Autobahn was built to reach the southern state capitals of
Graz and
Klagenfurt from Vienna. The construction of the Tauern Autobahn was not resumed until 1969. The
Inn Valley Autobahn in the western state of
Tyrol was built from 1968 onwards, up to today it is not directly connected to the main Austrian autobahn network, as via motorway drivers have to use the German autobahns
BAB 8 and
93 along the
Deutsches Eck link. == Autobahn system ==