NZTA to call for registrations of interest for construction, starting late-2011, of twin three-lane Waterview Connection tunnels on Western Ring Route, each comprising 2.1 km-long natural tunnel with 450 m-long cut/cover section. Tunnels are 11 m-high x 14 m-wide, with 25-30 m-high vent shafts. Geology is soft sedimentary rock with proximal basalt lava flows. Other construction works include widening and raising 3.2 km of state highway causeway, works to major interchanges including new interchange ramps and four new viaducts, and shape correction and resurfacing. For more information on the procurement process, e-mail victoria.wallace@nzta.govt.nz, or visit http://www.nzta.govt.nz/projects/waterviewconnection/construction/. 19/10.
