A king tide following last night's supermoon has flooded one lane of Auckland's Tamaki Drive.
The coastal road is closed to one lane of citybound traffic after Ngapipi Rd due to surface flooding, but remains open to eastbound traffic.
Citybound traffic is also backed up on Ngapipi Rd between the harbour and Orakei.
"Motorists should take extra care," an Auckland Transport spokesman said.