#Sumatra java slab xsection series#
The best known eruption of Krakatau in 1883 culminated in a series of massive explosions that killed tens of thousands of people. Many active volcanoes lie in the area, including Krakatoa only 40 km away. One of the difficult technical challenges to be considered is the fact that the strait is near the Sunda Trench in one of the world's most dangerous earthquake zones and is frequently rocked by significant tremors. Possible sections of Sunda Strait Bridge (illustrative example) Section One of the various possible designs that has been mentioned involves a project of around 27 km in length with the following sections alternating across land and water: Alternatives which some observers favour are the construction of a tunnel or, more simply, improvements to the existing intensively used ferry services. There are different views as to the most appropriate design for the details of the bridge, and even as to whether the construction of a bridge is the best way of easing the current serious transport bottlenecks for movement between Java and Sumatra. There were originally hopes that the first travellers might cross the bridge as early as 2020 although the likely completion date is tending to drift because of delays in discussions about plans for the project. Officials in the consortium that plan to build the bridge originally hoped that construction would begin in 2012 but even the plan to prepare a feasibility study was delayed beyond 2012. The upper structure with a span of 3,300 meters would be like the Messina Strait Bridge in Italy, while the lower structure with a span of 1,991 meters would be similar to the Akashi Kaikyō Bridge in Japan. The project, with an initial estimated minimum cost of at least US$10 billion but probably considerably more, is for a series of bridges carrying a six lane highway and double track railway traversing the three islands of Prajurit, Sangiang, and Ular in the strait. If the project goes ahead as planned, it would join the list of the world's most expensive transport infrastructure. Construction of the bridge would be an ambitious project, being much more expensive than any other single infrastructure investment yet carried out in Indonesia.
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