Route 9, Nam Wan Tunnels & WTY Viaduct

Tunnel Linings - Membrane

  • Sha Tin, Hong Kong
  • Government of Hong Kong S.A.R. (Highways Dept)
  • Gammon-Skanska Joint Venture

Nam Wan twin road tunnels involves the provision of a system 1.2Km of tunnel, excavated by drill and blast at Tsing Yi, and 0.15Km of West Tsing Yi Viaduct. The Company provided Supervision, Technicians for the supply and installation of the membrane waterproof linings and associated cementitious and chemical protective coating works on viaducts, two Portals, all toll booths and associated ancillary buildings.