Project to upgrade the Northern Corridor (SH1) commuter link in Auckland and improve transport options on the North Shore for cars, pedestrians and cyclists. It includes a new freeway connection between SH1 and SH18, opening up access to the Western Ring Route and the airport. Protecnium provided civil engineers specializing in structural calculations and cost estimating engineers for the tender. Protecnium is providing a senior surveyor and production and earthworks engineers.