The original completion date in March was delayed due to the impact of Omicron and following the heavy rain in Hawke's Bay and Tairāwhiti earlier in March.
Hankin said State Highway 2 Norsewood, between Hastings and Woodville, is expected to be busy for southbound traffic between 10.30am and 3.30pm on Friday, 10.30am and 2pm on Saturday, and between 10.30am and 3.30pm on Monday.
She said northbound travellers should expect delays between 10am and 3.30pm on Monday.
"Congestion and delays are inevitable in peak times, but if everyone leaves plenty of time for their journey, drives to the conditions and plans ahead before leaving home, there will be less frustration and everyone can concentrate on arriving safely at their destination."
"Allow plenty of time. You're on holiday, there's no need to rush."
She advises motorists to check their vehicle was safe to drive and drive to the conditions.