Thailand, Laos Friendship Bridge The bridge across the Mekong River from Nong Khai to the Port Tha Duea District of Lao PDR. about 20 kilometers, built with the cooperation of the 3 countries are Australia, Lao and Thai. A bridge that creates a Thai-Lao relations demonstrate more economic. Social and cultural. The bridge opening hours 05.00-20.00 hrs.