Four laning SH1 south of Whangārei: Community events planned to learn more 20 Feb, 2021 06:57 PM 4 minutes to read Many homes and business along Otaika Rd in Whangārei are on the chopping block as Waka Kotahi NZ Transport Agency plans to expand SH1 to four lanes up to the Ruakākā roundabout. Many homes and business along Otaika Rd in Whangārei are on the chopping block as Waka Kotahi NZ Transport Agency plans to expand SH1 to four lanes up to the Ruakākā roundabout. Northern Advocate Plans to four-lane State Highway 1 south of Whangārei could impact on more than 330 properties, and people can find out more at the first community information days planned for the project.