The technique was designed by Tjokorda Raka Sukawati and involves the construction of the horizontal supports for the highway beside the existing road, which is then lifted and turned 90 degrees angle before being placed on the top of the vertical supports to form the flyover pylons.
Tjokorda Raka Sukawati (born Ubud, Bali, May 3, 1931) is an Indonesian engineer who invented Sosrobahu.
In 80's an Indonesian engineer, Tjokorda Raka Sukawati invented a road construction technique named Sosrobahu which becomes famous afterwards and widely used by many countries.