Tronchetto is basically a huge parking terminal, and before the People Mover, you had to take a boat, bus or walk to get to Piazzale Roma, which is the final place you can arrive by car to reach Venice proper before you are stopped by the water. Scoring a parking space in Piazzale Roma was always difficult and expensive.
To experience more of the New World Venice, when you arrive at Piazzale Roma, you can walk over the new Fourth Bridge, officially known as the Ponte della Costituzione (even though Wikipedia says everyone calls it the Calatrava Bridge, I, and many other people still call it the Fourth Bridge.) From Wikipedia:
The Ponte della Costituzione (English: Constitution Bridge) is the fourth bridge over the Grand Canal in Venice, Italy. It was designed by Santiago Calatrava, and was moved into place in 2007 (connecting Stazione di Santa Lucia to Piazzale Roma), amid protest by politicians and the general public. The bridge was installed in 2008 and opened to the public on the night of September 11, 2008. The bridge was known as Quarto Ponte sul Canal Grande before the official name was adopted to celebrate the 60th anniversary of the Italian constitution in 2008. Tourists and locals in Venice now refer to it as the Calatrava Bridge (Italian: Ponte di Calatrava a Venezia).
(The Fourth Bridge looks kind of Neo Art Deco, too:)
We even have new vaporetto terminals popping up all over town, also in the same style. There is one on The Lido, one over by Harry's Bar and one down by Arsenale. They are huge compared to the old vaporetto stops, and again, sort of sleek Neo Art Deco. I can't find a good photo of the new terminals, that is how new they are:)
Here in Venice, change is usually regarded with suspicion. We have a saying, "Com' era, Dov' era," which means"As it was, where it was." So, if a building goes down, as it did when La Fenice burned, the rule is that it must go back as closely as possible to how it was before.
Ciao from Venice,
Venetian Cat - The Venice Blog