Motorists are being warned of delays on State Highway 2 near the Waikato Expressway in Pōkeno.
The hold-ups are because of a fire nearby, with emergency services responding after the alarm was raised just after 10.30am, police said.
“We ask motorists to take extra caution while on SH2 between the Expressway and Avon Rd.”
The fire was an electrical one in a lamp-post and had now been put out, a Fire and Emergency New Zealand spokeswoman said.
A lane had been blocked to allow firefighters to do their work, with only one fire engine and crew still at the scene.
The spokeswoman said she wasn’t sure when that engine and its crew would be leaving.