Kokmaduwa, Welipenna interchanges flooded 10:52:00 AM IFTTT, News Kokmaduwa and Welipenna interchanges on the Southern Expressway (E01) had been flooded and motorists are advised to use alternate routes, Southern Expressway Deputy Director R. A. D Kahatapitiya said. Share this Share on FacebookTweet on TwitterPlus on Google+