According to tradition, all 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,[1] with the northern bridge officially named "Bhumibol 1 Bridge" and the southern bridge "Bhumibol 2 Bridge".[2] The unofficial name "Mega Bridge" was also widely used.[3]