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|---|---|---|---|---|
| Tangenziale di Mestre Mestre ring road | ||||
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| Route information | ||||
| Part of E55 | ||||
| Maintained by ANAS | ||||
| Length | 26.7 km (16.6 mi) | |||
| Existed | 1972–present | |||
| Major junctions | ||||
| Beltway around Mestre | ||||
| West end | Dolo | |||
 A4 in Dolo A27 in Marcon A4 in Quarto d'Altino | ||||
| East end | Quarto d'Altino | |||
| Location | ||||
| Country | Italy | |||
| Regions | Veneto | |||
| Highway system | ||||
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The Tangenziale di Mestre ("Mestre ring road") or Autostrada A57 is an autostrada (Italian for "motorway") 26.7 kilometres (16.6 mi) long in Italy located in the region of Veneto bypassing the urban center and suburban developments of Mestre. It was opened to traffic on 3 September 1972 and it is a part of the E55 European route.