The NZ Transport Agency said the breakdown was in the southbound lane on George Bolt Memorial Drive, approaching the John Goulter Drive roundabout.
"The right-lane is blocked. Expect delays heading to the airport," it said.
Emergency services now diverting all airport-bound traffic thru shops for safety due possible truck fire ^TP https://t.co/yZNOB9xtgL
— Waka Kotahi NZTA Auckland & Northland (@WakaKotahiAkNth) March 20, 2017
The agency advised using Puhinui Rd.
#DELAYS for airport-bound traffic on George Bolt Mem Dr (#SH20A) with diversions due to truck breakdown. Consider using Puhinui Rd ^TP pic.twitter.com/n4InkAEmpf
— Waka Kotahi NZTA Auckland & Northland (@WakaKotahiAkNth) March 20, 2017
The airport said it would take 30 minutes for the truck to be removed.