Erosion undermines ferry terminal
Erosion of the seabed and seawall around Auckland’s Ferry Building requires $1 million repairs.
Divers discovered an increased amount of erosion of the seabed and seawall in front of the building at the bottom of Queen St in August, Auckland Transport chief engineer Andrew Scroggins said on Friday.
A hole caused by the erosion was about 16 metres long and varied in depth from 0.2 metres to 1.2 metres, Scroggins said.
AT had been regularly monitoring the condition of the seawall due to its age. A further check on the wall two weeks ago showed ‘‘no further erosion’’, he said.
Repair work will start in about two weeks and take six to 10 weeks.
‘‘This will stop any further erosion,’’ Scroggins added.
Engineering firm Tonkin and Taylor had completed a preliminary stability analysis and confirmed that while there was no risk of imminent failure.
They had recommended completing the work as soon as possible to prevent the erosion from continuing under the structure, Scroggins said.
‘‘We are progressing with design and construction planning to begin repairs to ensure we can complete this work prior to the busy summer holidays,’’ he said.
Some ferry services will be relocated but full services are expected to run as scheduled.