Third Tagus Crossing - Credit: Wikimedia Commons
The Third Tagus Crossing (commonly abbreviated as TTT) is a project for a road-rail crossing over the Tagus River, with the aim of connecting the city of Lisbon, on the north bank, to the peninsula of Setúbal on the south bank. It is part of the construction of the new Lisbon-Madrid and Lisbon-Seville high-speed railway line ("RAVE"). Read more on Wikipedia
Source: en.wikipedia.org