The Seatoun Wharf will close to the public for up to a year for safety and heritage upgrades.
It comes after a condition assessment in 2017 found several structural issues with the wharf.
Since the assessment, areas of the wharf have been fenced off to the public.
Wellington City Council said due to the degree of structural issues and its heritage status, engineers advised it will need substantial repairs which could take up to 12 months.