Kuala Lumpur Today - Drive Through Smart Tunnel

The SMART Tunnel in Kuala Lumpur, Malaysia, is the world's first dual-purpose tunnel functioning as both a storm water drain and a motorway. Key Facts Length: 9.7 km total stormwater bypass tunnel, which includes a 4-km double-deck motorway. Primary Purpose: Diverts floodwater away from the city center of Kuala Lumpur to prevent major disasters like the 1971 floods. Secondary Purpose: Relieves heavy rush hour traffic traveling into and out of the southern gateway of Kuala Lumpur. Cost: Built for approximately RM1.887 billion and opened to traffic on May 14, 2007.