
Nong Khai is a city in North-East Thailand, capital of the Nong Khai Province. It is situated on the Mekong River and is the site of the First Thai-Lao Friendship BridgeLaos.
It is the Thai gateway to the Laos' capital of Vientiane 25 kilometres up river, on the North bank opposite the Thai town of Sri Chiang Mai. At the time of building the bridge, space for a railtrack was installed along the centre of the roadway to the Laos side; at present the railway track ends at the Thai side of the bridge.
The service currently stops one kilometre short of the border at a new railway station not far from the city centre of Nong Khai. Construction of an extension to Vientiane was begun early 2007