Auckland ratepayers face a bill of about $40 million to prevent part of the downtown seawall between Princes and Marsden wharves failing in a moderate earthquake.
The risk of failure is considered low, but the council has patched a section between Princes and Queens wharves at a cost of $700,000, pending permanent repairs next year.
"There is no immediate risk to limb or life and nothing physically threatening at the moment," said Rick Walden, who heads a council group co-ordinating several downtownprojects.
"What we are really doing is taking account of what the impacts of a shake might be."