2019-01-292019-01-292008-07-01https://dl-cea.nsf.gov.lk/handle/1/1890863National Highways Sector Project : Improvement and Upgrading Welipenna Southern Expressway Interchange, km 43.0) to Aluthgama (km 53.5) of Horana-Anguruwatota-Aluthgama (B157) RoadHighwaysWelipennaKalutharaI00194