The work includes a full overhaul of old parts, applying anti-rust coating, and thorough trials and assessments to pre-empt and prevent future technical faults, according to Eke Panuku Development Auckland.
With the bridge remaining upright to allow marine traffic to access the Viaduct Basin pedestrians have a long walk to reach the Wynyard Quarter.
Extra bus services have been scheduled to try to counter the drop-off in foot traffic but the ferry is an extra measure to counter the closure of the bridge which is not expected to reopen until next summer.
Passengers are asked to complete a questionnaire that asks how they rate the service, how safe did they feel on board, how easily did they find it, how quick was it, and would they use it again and recommend the service to friends and family.