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)
Related Projects
Storage sewer Mauerpark  Berlin
Storage sewer Mauerpark Berlin

Storage sewer at Berlin's Mauerpark will prevent sewer overflow into the Spree and Pranke rivers in the future.

Read more
Uetliberg Tunnel
Uetliberg Tunnel

Greatly varying geology required different driving methods during the construction of the Uetliberg Tunnel in Switzerland. The 4.4 km long road tunnel connects the Birmensdorf bypass with the existing national road Zurich-Chur.

Read more
Weinberg Tunnel, Lots 3.1 and 3.2
Weinberg Tunnel, Lots 3.1 and 3.2

The Zurich main station - Altstetten - Oerlikon cross-city line forms the central part of the West- East-axis of the Swiss railway lines. The Weinberg tunnel is the centrepiece of the cross-city line and connects the new through station “Löwenstraße” in Zurich with Oerlikon station.

Read more