Technical specifications

Scope of work

  • Combined flood relief and road tunnel
  • Length: 5,230 m
  • Internal diameter: 11.83 m

Construction method


  • TBM tunnelling using a Mixshield (slurry shield)
    shield diameter: 13.21 m
  • Segmental lining



  • Sand
  • Gravel
  • Limestone

General data

Stormwater Management and Road Tunnel (SMART) Project,
flood relief and road tunnel in the city centre of Kuala Lumpur

MMC Eng. Group Bhd./Gamuda Eng. Sdn. Joint Venture,
Kuala Lumpur, Malaysia

Wayss & Freytag Ingenieurbau AG

Construction period
January 2003 to January 2006

Construction costs
€ 83 million

Flood relief- and Road tunnel
5,230 m
Construction Method
TBM tunneling using a Mixshield (slurry shield)
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