The crash on SH18 occured near Trig Road. Photo: Waka Kotahi
A serious crash has closed westbound lanes of State Highway 18 in Auckland and motorists have been warned of delays.
The crash near Trig Road closed westbound lanes at Brigham Creek Road off-ramp for for a police investigation.
Waka Kotahi asked motorists to delay their journey or follow the detour via Hobsonville Road to Westgate.
Auckland Transport said bus routes 112, 114 and 120 had been experiencing delays of up to 15 minutes.