Motorists in the area are advised to expect significant delays to their travel this afternoon.
The road closure is expected to be in place for some time while the scene is examined, police said.
SH1 MOEREWA - ROAD CLOSED - 3:10PM Due to a serious crash #SH1 is now CLOSED between Moerewa and Kawakawa. A detour via Paihia (using SH11) will be required. Allow extra 25 mins or delay your journey: https://t.co/5qxRt2nxkN ^TP pic.twitter.com/3tPx9ynb00
— Waka Kotahi NZTA Auckland & Northland (@WakaKotahiAkNth) September 11, 2019