In this Act, unless the context otherwise requires,—
bridge means the bridge across the upper reaches of the Waitemata Harbour having its eastern end at Greenhithe and its western end at Hobsonville
maintenance includes maintenance, inspection, and repairs to the bridge sub-structure including fender piles and super-structure; the maintenance, repair, and renewal of the road surface of the bridge and abutment footpaths; the provision and maintenance of street and navigational lighting on the bridge; the provision and maintenance of any emergency communication service on the bridge to a control point either within or outside the districts of the said Cities; and the provision and maintenance of any necessary hazard signs for the safety of the public.