The Autostrada A23 or Autostrada Alpe-Adria is an autostrada 120 kilometres (75 mi) long in Italy located in the region of Friuli-Venezia Giulia which connects the Autostrada A4 (Turin–Trieste) near Palmanova via Udine to Tarvisio and the Austrian A2 Süd Autobahn. It is a part of the E55 European route. The Autostrada A23 is one of the main transport links between Northeast Italy and Central Europe.