Stormwater Management and Road Tunnel (SMART)

Engineering and Construction
Stormwater Management and Road Tunnel (SMART)

Location

Kuala Lumpur, Malaysia

Year

2003 – 2007

SMART took the world by storm with its unique concept to solve two of the critical dilemmas faced by urban cities – traffic and floodwater drainage. This world’s first dual-purpose 13.2m diameter tunnel was constructed with a Slurry Mix-Shield TBM (the latest in Southeast Asia and the second largest in Asia). SMART, in its own capacity could address 45 percent of Klang Valley’s major floods.

SMART has four modes of operation:

Mode 1 

No flood water will be diverted into the SMART system.

Mode 2

The SMART system will be activated, and flood water will be diverted into a bypass tunnel in the lower channel of the motorway. Up to this point, the motorway will still be open to traffic. 

Mode 3

The SMART system will be activated, and the motorway will be cleared and closed to trac. Sufficient time will be allocated to allow the last vehicle to exit the motorway. The tunnel is on standby mode for stormwater diversion into the motorway component.

Mode 4

The SMART system will be activated if a heavy rainstorm prolongs, and the motorway will be filled with stormwater after all the gates are opened. Motorway components will be used for the passage of floods after trac evacuation is completed. The motorway will be re-opened to traffic within 48 hours.

The tunnel received the following international recognition:

CNN's List of Top Ten Tunnels in The World
United Nations-Habitat Scroll of Honour Award 2011
Best International Project, British Construction Industry Award 2008
Special Award for National Contribution, Fiabci Malaysia Property Award, Malaysia Chapter 2010
Special Award for Large Project, British Ace Engineering Excellence Awards 2008
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