- European route E57
European route E57 is an intermediateE-road connectingSattledt -Liezen -St. Michael -Graz inAustria and furtherMaribor -Ljubljana inSlovenia In Austria, it follows the A9 motorway, also called
Pyhrnautobahn . In Slovenia it follows the A1 motorway.It includes the longest tunnel in Austria, the Plabutschtunnel, 10.0 km long. It also includes the Gleinalm tunnel, 8.3 km long, and the Bosruck tunnel, 5.5 km long.
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