| Country: | ITA |
| Type: | A |
| Route: | 23 |
| Alternate Name: | Autostrada Alpe-Adria Alps-Adria motorway |
| Established: | 1966 |
| Direction A: | South |
| Terminus A: | Palmanova |
| Junction: | A4 in Palmanova |
| Direction B: | North |
| Terminus B: | Tarvisio |
| Length Km: | 120 |
| Regions: | Friuli-Venezia Giulia |
| Map: | Italia - mappa autostrada A23.svg |
| E-Road: | E55 |
| Previous Type: | A |
| Previous Route: | 22 |
| Next Type: | A |
| Next Route: | 24 |
The Autostrada A23 or Autostrada Alpe-Adria ("Alps-Adria motorway") is an autostrada (Italian for "motorway") 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.
| PALMANOVA – TARVISIO Autostrada Alpe-Adria | |||||
| Exit | ↓km↓ | ↑km↑ | Province | European Route | |
|---|---|---|---|---|---|
| 0 | 120 | ||||
| Udine Sud Raccordo Udine Sud | 13 | 106 | |||
| Rest area "Zugliano" | 14 | 105 | |||
| Udine Nord | 26 | 93 | |||
| Rest area "Ledra" | 37 | 82 | |||
| Gemona - Osoppo | 45 | 74 | |||
| Carnia - Tolmezzo Carnica | 60 | 59 | |||
| Rest area "Campiolo" | -- | 51 | |||
| 93 | 26 | ||||
| Rest area "Fella" | 97 | -- | |||
| 105 | 14 | ||||
| Malborghetto Valbruna | 105 | 14 | |||
| Tarvisio Sud | 108 | 11 | |||
| Tarvisio Nord | 115 | 4 | |||
| Austria–Italy border Süd Autobahn | 120 | 0 | |||
| RACCORDO UDINE SUD Southern Udine connection | |||||
| Exit | ↓km↓ | ↑km↑ | Province | ||
|---|---|---|---|---|---|
| Palmanova-Tarvisio | 0.0 | 2.7 | UD | ||
| Toll gate Udine Sud | 0.4 | 2.3 | |||
| Gorizia-Manzano-Buttrio Tangenziale Sud di Udine | 0.9 | 1.8 | |||
| Basaldella Tangenziale Sud di Udine | 2.7 | 0.0 | |||