Bridges_Presentation

. Name: Vasco de Gama Bridge Ubication: Portugal -Lisboa **cable-stayed bridge**: the longest in Europe and one of the largest of its kind in the world || **central H-shaped pylons** are 155m high ||
 * total length of crossing 17.2 km ||
 * length of marine viaduct 9 km ||
 * length of the cable-stayed main arch || 826 m (192 cables) ||
 * navigation deck clearance || 47 m above water level on the North Channel ||
 * **reinforced concrete structure** with main deck stayed to main pylons ||

In February 1995,beginning the constructions and in March 1998 opened the traffict,but the inaguration was on April,4,1998

**Named after** Vasco da Gama to commemorate the 500 years of his discovery of the sea route to India  In the **Year of the Oceans**, the theme of Expo '98, to which this bridge is intimately related, was "The Oceans: A Heritage for the Future", a very urgent appeal to the World to protect its seas **Location:**adjacent to the Expo '98 site, the last World's Fair of the 20th century and of the millenium; it was completed on a tight schedule to allow easy access to the Expo '98 site ** Why a second bridge over the Tagus River ** **:** need for an alternative north-south traffic link to bypass Lisbon and reduce traffic congestion in the capital

Name: Solkan Bridge Ubication: Slovenia-Solkan Solkan bridge is the most prominent bridge on the Bohinj Railway route between Jesenice and Gorica, and one of the most famous bridges in Slovenia. According to the known data, the bridge has the longest stone arch spanning over a river in the world and the longest stone arch among all railway bridges. The span of the main arch is 85 m. Rudolf Jaussner drew the plans for the bridge, and Leopold Orley directed its construction. The length of the whole object is 220 m. The bridge was under construction for two years, from spring 1904 until December 1905. The work was hindered mainly by the Soča River, which rose several times. For the main arch, they needed 4533 exactly fitted stones of limestone. During World War I the bridge, mined by the Austrian army, was severely damaged. After the Kobarid breakthrough in October 1917, it was provisionally repaired and in 1918 trains were again crossing the bridge. The nation of Italy thoroughly repaired it and the stone arch was rebuilt. The work lasted until 1927. Since then the bridge has been repaired several times, but it has preserved it original form and significance even after the construction of a new road bridge for the road towards the hills of Goriška Brda.

Name; Eiserne Steg Ubication; Germany The Eiserne Steg, probably Frankfurt's best known bridge, is a romantic 19th-century footbridge over the river Main. A pedestrian walkway and the first suspension bridge in Europe, the Eiserner Steg connects the city center with Sachsenhausen. The bridge itself is made of iron, the bridgeheads of red sandstone. Eiserner Steg or the Iron Footbridge was erected in 1868-69 by a private company of citizens as a third bridge across the Main connecting the center of Frankfurt with Sachsenhausen. 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 had begun in 1844. The bridge was for pedestrian use only. The 174 meter-long footpath has been adapted several times over the years, and is now accessible by children and the disabled. Blown up towards the end of WWII, today's bridge is a reconstruction of the old Eiserner Steg. The Iron Bridge was re-worked in 1911. When the bridge opened in September 1869, users had to pay a toll of one Kreuzer which was applied to the construction costs of 120,000 Florins. The toll was abolished when the city took over the bridge a short time later. Excursions by boat and an old steam train leave from here. It affords a fantastic view overlooking the shimmering river and makes for a nice spot to take in the atmosphere in.