Stormwater Management and Road Tunnel (SMART), Kuala Lumpur, Malaysia
Country/Region
Project Summary
A world first combined flood diversion and highway tunnel will relieve flooding and traffic congestion in Malaysian capital Kuala Lumpur.
Project Description
MOTT MacDONALD
A world first combined flood diversion and highway tunnel will relieve flooding and traffic congestion in Malaysian capital Kuala Lumpur.
Six of the Stormwater Management and Road Tunnel's (SMART) 9.8km are dedicated to flood relief, with the central 3km fulfilling a dual role. Traffic in this section is accommodated on two decks. Most floods are able to flow through the bottom of the tunnel, beneath the lower road deck. Decks are protected from inundation by guillotine style gates. Road decks will be closed to traffic and opened to flood flows during extreme flood events.
Tunnelling faced significant geological and technical risks. Intensive site investigation and ground improvement, meticulous attention to detail during specification of tunnel boring equipment, careful project management and close supervision ensured tunnelling occurred without major incident. The tunnel has been constructed in two years for a small budget of £300M.
Mott MacDonald designed the dual purpose section, and provided specialist consultancy for tunnelling overall. Mott MacDonald also acted as client's representative, helping the contractor resolve technical problems and assuring quality.
For this project Mott MacDonald was a prizewinner in the British Expertise International Awards 2007/8.