How is Venice connected to the mainland of Italy?

The city of Venice is connected to the mainland of Italy by the Ponte della Libertà, a 4-km long bridge that crosses the Venetian Lagoon. The bridge was constructed between 1931 and 1933 and opened to traffic in 1933. It carries both road and rail traffic, with four lanes for cars and two tracks for trains. The Ponte della Libertà is also known as the Liberty Bridge, and it provides a vital link between Venice and the Italian mainland.