Meanwhile the NZTA has reminded motorists to plan ahead to avoid the traditional busy travel times this Auckland Anniversary weekend.
NZTA advised motorists said those heading back to Auckland on Sunday or Monday were likely to be delayed by heavy traffic volumes.
The busiest travel times for those heading back to Auckland would be from about lunchtime through until the early evening.
"If you can plan your travel outside of these times you'll be giving yourself a much less stressful start to the weekend and help ease congestion levels for everyone else," NZTA Auckland highway manager Brett Gliddon said.
The Northern Gateway Toll Road on State Highway 1 north of Auckland was expected be one of the busiest roads with more than 21,000 trips a day recorded during previous anniversary weekends.