 Where the two spans meet, another road rises to join them at a free-flowing interchange suspended 50 metres above the ground.The bridge opened for traffic on 20 September 2006, before the official opening date of 5 December 2006.It is part of the Bangkok Industrial Ring Road, a royal scheme initiated by King Bhumibol Adulyadej that aimed to solve traffic problems within Bangkok and surrounding areas, especially the industrial area around Khlong Toei Port, southern Bangkok, and Samut Prakan Province.