Punganui Stream Bridge replacement
The Punganui Stream bridge replacement project involves replacement of an existing 1950's concrete bridge 7km North of Helensville on State Highway 16. The existing bridge sits in the tidal flow of the stream while the new, wider bridge is being constructed at a higher elevation. Firth has been supplying marine mixes to Fletcher Construction on this project, often working nights to minimise inconvenience to the public.