The Schmitten Tunnel (German: Schmittentunnel) is the bypass tunnel for the town of Zell am See in Austria and a road tunnel on the Pinzgau Road (Pinzgauer Straße, B 311) in the Austrian state of Salzburg.The Schmitten Tunnel has a length of 5,111 metres and acts as a relief road for the through road in Zell am See, that is normally very busy.