{"id":3125,"date":"2019-12-12T10:35:35","date_gmt":"2019-12-12T10:35:35","guid":{"rendered":"http:\/\/www.www.reco.com.au\/?p=3125"},"modified":"2024-04-10T06:23:59","modified_gmt":"2024-04-10T06:23:59","slug":"transmission-gully-project","status":"publish","type":"post","link":"https:\/\/www.reco.com.au\/transmission-gully-project\/","title":{"rendered":"Transmission Gully Project"},"content":{"rendered":"
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TechSpan arches and Reinforced Earth walls for New Zealand road project<\/h2>\n

The Transmission Gully Project (TGP) provided a new, 27 km long, four-lane motorway north of Wellington, New Zealand. This modern and safe main highway will bypass the coastal communities and space-limited choke points, which resulted in ever increasing traffic congestion on the existing SH1 highway.<\/p>\n

The project was highly complex, with the alignment in places crossing steep, difficult, terrain and in other places crossing flood plains with deep, soft foundation soils. For much of its length, the alignment was close to the active Ohariu fault.<\/p>\n

Twenty-five new bridges and large culverts, were required over the length of the alignment for the Transmission Gully Project. Many of the bridges were single span structures, with spans ranging from 22 m to 38 m.<\/p>\n

The Wellington Gateway Partnership (WGP) and the New Zealand Government formed a Public Private Partnership (PPP) to deliver the Project. The WGP subcontracted the Design and Construction of the Project to a Joint Venture between CPB Contractors Pty Ltd and HEB Construction Ltd (a VINCI subsidiary).<\/p>\n

Known as the CPB HEB JV, the group contracted Reinforced Earth for the design and supply of materials for 10 bridge abutments. Reinforced Earth considered in the design the proximity to the active Ohariu Fault with an effective magnitude of 7.<\/p>\n