Malaysia’s capital boasts a unique piece of infrastructure; a combined stormwater and motorway tunnel, the longest multi-purpose tunnel in the world. Kuala Lumpur’s Stormwater Management and Road Tunnel (Smart) was conceived as a project under the Malaysian Federal Government to alleviate the flooding problem in the city centre. Although a booming city and the nerve centre for Malaysia’s economy, KL was built along the flood plains of the Klang River and, since its earliest days has been subjected to floodi