ECOLOGISTS have opposed the proposed 31-km Colombo-Katunayake expressway, writes Mallika Wanigasundara in a Panos report. They claim it will dislocate approximately 2,500 families, affect the livelihood of 2,000 fisherfolk and destroy about 35 ha of biologically rich marshland. The environmentalists contend the flood problem will be aggravated as the expressway will cross two flood plains, preventing rainwater from flowing into the flood basins.