An elegant hybrid solution to cross the Bosphorus strait in a mixed-traffic environment within an ever-expanding urban context

The aim of the present paper, after a brief presentation of Italian company styled Astaldi, is explaining how the decision was made in Istanbul to establish a permanent link between the two continents over/under the Bosphorus, the 3rd Bosphorus Bridge becoming, in this scenario of a continuous increasing traffic, an elegant solution to cross the strait for the first time with a mixed-traffic (motorway plus railway) environment.