Thai–Lao Friendship Bridge pronounced is a bridge over the Mekong, connecting Nong Khai province and the city of Nong Khai in Thailand with Vientiane Prefecture in Laos the city of Vientiane is approximately 20 km from the bridge. With a length of 1,170 meters the bridge has two 3.5 meter-wide road lanes, two 1.5 meter-wide footpaths and a single 1,000 mm gauge railway line in the middle, straddling the narrow central reservation.