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Elevated toll road on Jalan Ahmad Yani by pass, Jakarta, Indonesia. The elevated road used the Sosrobahu construction technique that rotates the beam-supporting bar on each pylon.
Sosrobahu is a road construction technique which allows long stretches of flyovers to be constructed above existing major roads with minimum disruption to traffic. The technique was designed and invented by Indonesian engineer Tjokorda Raka Sukawati and involves the construction of the horizontal supports for the highway beside the existing road, which are then lifted and turned 90 degrees before being placed on the top of the vertical supports to form the flyover pylons.[1]
This technique is of considerable value in increasing road mileage in large cities where there is limited right-of-way for new roads and the closure of existing roads throughout the flyover's construction using normal techniques would impose significant economic costs. The term sosrobahu was derived from Old Javanese which means "thousand shoulders".[2]
^Sebastianus Epifany (18 May 2017). "Sosrobahu, World-Class Construction Technology from Indonesia". Construction Asia Online.
^The Generalist (6 March 2020). "Thousand shoulders". The Generalist Academy. Retrieved 26 June 2020.
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