|Crosses||Chao Phraya River|
|Official name||Bhumibol Bridge|
|Other name(s)||Industrial Ring Road Bridge, Mega Bridge|
|Total length||702m and 582m|
|Height||50m and 50m|
|Longest span||326m and 398m|
|Opened||5 December 2006|
The Bhumibol Bridge (Thai: สะพานภูมิพล), also known as the Industrial Ring Road Bridge (Thai: สะพานวงแหวนอุตสาหกรรม) is part of the 13 km long Industrial Ring Road connecting southern Bangkok with Samut Prakan Province. The bridge crosses the Chao Phraya River twice, with two striking cable-stayed spans of lengths of 702 m and 582 m supported by two diamond-shaped pylons 173 m and 164 m high. 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 aims to solve traffic problems within Bangkok and surrounding areas, especially the industrial area around Khlong Toei Port, Southern Bangkok and Samut Prakan Province.
According to tradition, all the bridges over the Chao Phraya in Bangkok are named after a member of the Royal Family. In October 2009, it was announced that both bridges would be named after King Bhumibol Adulyadej, with the northern bridge officially named "Bhumibol 1 Bridge" and the southern bridge "Bhumibol 2 Bridge". The unofficial name "Mega Bridge" was also widely used.
Basic structure of Bhumibol Bridge consists of two main parts that are: - Bhumibol Bridge 1 is the one across the northern part of Chao Praya River connecting Yannawa district, Bangkok and Songkranong district, Samut prakarn. It is a cable-stayed bridge with 7 lanes together with 2 high pillars. The structure is reinforced concrete 50m tall from the water level to let the cargo ship be able to travel by. - Bhumibol Bridge 2 is the one across the southern part of Chao Praya River connecting Songkranong district and Bangyhaprak district. The structure is almost the same as Bhumibol Bridge 1, with 7 lanes and 2 high pillars and built using reinforced concrete 50m tall from the water level to let the cargo ship be able to travel from Chao Praya River to Klongtoey pier.
- "Breaking news, bangkok breaking news - The Nation". Nationmultimedia.com. Retrieved 2012-09-19.
- "Bhumibol Bridge in Samut Prakan สะพานภูมิพล - Samut Prakan (Paknam) จังหวัดสมุทรปราการ เมืองปากน้ำ". Paknam. 2009-10-21. Retrieved 2012-09-19.
- "Bangkok's Mega-Bridge" on 2bangkok.com, with many photos of the construction process. The author tentatively claims to have originated the name 'Mega-Bridge'.
- "Discovery Channel Nederland". Discoverychannel.co.uk. Retrieved 2012-09-19.
- PERI – weekly cycle of four 173 m high pylons simultaneously with PERI ACS
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