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The bridge spans Songkhla Lake on Hwy 408. It is the longest concrete bridge in Thailand, with two parts: the first part connects the coast of Songkhla at Ban Nam Krachai to the southern coast of Ko Yo, this part is about 1,140 m long; the second part connects the northern shore of Ko Yo to the coast of Ban Khao Khiao, a length of 1,800 m. It was opened to traffic in 1986.