It is located Hohenwarthe near the town of Magdeburg, Germany, which was designed by Ingenieurburo Grassel GmbH Beratende Ingenieue Bauwesen and HRA Bochum for responsible engineer. The construction started in 1997 and taking 6 years to complete, aiming to connect Elbe-Havel canal and Mittellandkanal by crossing over the Elbe-Havel. The bridge is known as the longest aqueduct, which now connects Berlin’s island harbor network with ports along the Rhine River.
Previously, the opposite side of the Elbe River was a meeting place where these two rivers join, where it has a lower elevation level. The idea of creating this bridge is to reduce time and distance from crossing the river, instead of 12 kilometers to 918 meters. Also avoiding unreliable passage along the rivers when low water level occurs. With these 918 meters in length, 34 meters wide, and 4.25 deep; the bridge is capable of carrying 1350 metric tons. The bridge was constructed as truss bridge where mainly use 24,000 tons of steel and 68,000 meters cube for the concrete piers. The force and bearing load of the water depends on the speed of the boat and water is distributing the load by its flowing.
The Helix Bridge, Singapore
The Helix Bridge is a pedestrian bridge that links Marina Center with Marina South in Marina Bay area in Singapore. It is located beside the Benjamin Sheares Bridge, which also accompanied by a vehicle Bayfront Bridge, where they connects at its mid-point; also having Singapore’s first art park, the Youth Olympic Park, at its entrance as well. It is expected to link cultural, recreational, entertainment facilities all together. This helix shaped bridge was designed by comprising Australian architects, The Cox Group, and engineer, Arup; also Singapore based architects 61. The Collaboration of Sato Kogyo Pte Ltd and TTJ design and Engineering Pte Ltd took the construction and completed it in 2 years.
The concept of the bridge came from a desire in creating curved plan bridge which having it sweeps down onto promenades either side. Within 280 meters long, steel tubes were used to form both major and minor helixes; crossing over each other in opposite direction. Many canopies, made of fritted-glass and perforated steel mesh, are incorporated along inner spiral parts providing shades to pedestrians. Additionally, arranging all steel tubes that were used would create a 2,25, meters of straighten steel. This pedestrian bridge provides 5 viewing platforms sited at strategic locations providing amazing visions of the Singapore’s skyline and also events in Marina Bay.
At nighttime, the bridge will be lighted up by series of light that highlight the double-helix structure, giving special visual experience to audiences. Also pairs of colored letter C, G and A, T will be lit up in red and green; which each letter represents 4 bases of DNA: Cytosine, Guanine, Adenine, and Thymine. Moreover, the Helix Bridge was mentioned as ‘life-giving’ and ‘sustainability’ because of organic design of multiple connection joints, the use of stainless steel, and an utility of steel which is five time less steel than a conventional box girder bridge. Therefore, these facts give an impression to Singapore as ‘green walking city’. Helix Bridge design won the winner place of the World Architecture Festival 2010
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