The longest bridge of Thailand, is combined with two bridges on two sides of Koh Yo - an island - to link up the highway 401 with Koh Yo. For years before, traffic of the lower southern highway had to cross the lake by ferries from Songkhla town.
The longest concrete bridge of Thailand, consisting of two parts, stretches out into Songkhla Lake to link the island, Koh Yor, with the mainland, facilitating the traffic flow between Songkhla and nearby districts.The first part of the bridge itself is 940 meters long with 100-meter-long tied-beam at each end. The other part of the bridge is 1,700 meters long with the 225 meters tied-beam on Koh Yor and 100 meters tied-beam at another end.Begin the bridge construction in March 26, 1984, and finished in Sept. 25, 1986, the bridges make the island become very famous, as it’s easy to access.How to see them?As you head to Koh Yor, you have to get over it. For the excellent view of the bridge, you may stop at the provided rest areas, one before approaching the first part of the bridge from Ban Nam Krajai, and the other one, just in front of the Institute for Southern Thai Studies, before leaving the island at the northern end.