Emergency services are on-site and are working to set up detours to avoid the incident, the NZ Transport Agencey reports.
Motorists are being told to expect delays and avoid the area if possible.
SH1 BRYNDERWYN HILL - TRUCK FIRE - 6.00PM A truck fire is blocking lanes on the southern end of the Brynderwyn just prior to the #SH12 turn-off. Emergency services are on-site & detours will be set up shortly. Expect delays & avoid area if possible. https://t.co/jX1U2aYsen. ^MF pic.twitter.com/fjWABw3Qv5
— Waka Kotahi NZTA Auckland & Northland (@WakaKotahiAkNth) December 11, 2018