| 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 | |
|---|---|---|---|---|---|
| 0km (00miles) | 120km (80miles) | ||||
| Udine Sud Raccordo Udine Sud | 13km (08miles) | 106km (66miles) | |||
| Rest area "Zugliano" | 14km (09miles) | 105km (65miles) | |||
| Udine Nord | 26km (16miles) | 93km (58miles) | |||
| Rest area "Ledra" | 37km (23miles) | 82km (51miles) | |||
| Gemona - Osoppo | 45km (28miles) | 74km (46miles) | |||
| Carnia - Tolmezzo Carnica | 60km (40miles) | 59km (37miles) | |||
| Rest area "Campiolo" | -- | 51km (32miles) | |||
| 93km (58miles) | 26km (16miles) | ||||
| Rest area "Fella" | 97km (60miles) | -- | |||
| 105km (65miles) | 14km (09miles) | ||||
| Malborghetto Valbruna | 105km (65miles) | 14km (09miles) | |||
| Tarvisio Sud | 108km (67miles) | 11km (07miles) | |||
| Tarvisio Nord | 115km (71miles) | 4km (02miles) | |||
| Austria–Italy border Süd Autobahn | 120km (80miles) | 0km (00miles) | |||
| RACCORDO UDINE SUD Southern Udine connection | |||||
| Exit | ↓km↓ | ↑km↑ | Province | ||
|---|---|---|---|---|---|
| Palmanova-Tarvisio | 0km (00miles) | 2.7km (01.7miles) | UD | ||
| Toll gate Udine Sud | 0.4km (00.2miles) | 2.3km (01.4miles) | |||
| Gorizia-Manzano-Buttrio Tangenziale Sud di Udine | 0.9km (00.6miles) | 1.8km (01.1miles) | |||
| Basaldella Tangenziale Sud di Udine | 2.7km (01.7miles) | 0km (00miles) | |||