Bridge+Presentation

**Name of bridge**: Vasco da Gama Bridge


====**Location**: located next to the site where Expo '98 stood and today stands Parque das Nações (Park of Nations). It's located on the eastern end of Lisbon which, until the beginning of the nineties, was the poor side of the capital, full of abandoned containers, garbage depots, junkyards, slaughterhouses, arms factories, refineries and gas terminals, in short, a rundown area in dire need of redevelopment. Transforming this public dump into a quality area, decontaminating 330 hectares of land and cleaning up 5 kilometers of river front took four years. ==== ====**Type of bridge**: cable-stayed bridge: the longest in Europe and one of the largest of its kind in the world ==== ====**Materials used:** reinforced concrete structurewith main deck stayed to main pylons ==== ====**Purpose of the bridge:** need for an alternative north-south traffic link to bypass Lisbon and reduce traffic congestion in the capital ====

====**Name of bridge:** The Solkan Bridg e ====

**Materials used:** Stone
====**Purpose of the bridge:** It was constructed because of the need of adittional railway connection of Vienna to Trieste ====

**Name of bridge**: Eiserner Steg


**Location:** Frankfurt, Germany.

**Materials used:** Iron and Steel.
====**Purpose of the bridge:** The other two bridges across the Main at that time were the centuries old Alte Bruecke (Old Bridge)and a railroad bridge (today's Friedensbruecke) that was begun in 1844, and these were dangerous for people to cross by walking because of the heavy traffic. The Eisener Steg bridge was for pedestrian use only as there was no space on the Frankfurt side to build access ramps for a road bridge. It was rebuilt in 1910 because its height was too low, and then rebuilt two other times because it had been destroyed during the war. ====