Old Packhouse Market Kerikeri owners Warrick and Judy Hyland are looking forward to the Brynderwyns opening over Easter. Photo / Jenny Ling Northland businesses hit by a downturn in customers due to the closure. NZ Transport Agency Waka Kotahi [NZTA] will reopen SH1 over the brynnerwyn Hills for six days from 12.01am on March 28 to 11.59pm on April 2, giving businesses a much-needed boost.