Press Release – NZTA All Upper South Island highways are currently open after the recent torrential rain, bar SH63 Renwick to near St Arnaud/ Tophouse. https://www.journeys.nzta.govt.nz/traffic/roadclosures/349004 Given the amount of damage to the road surface from the flood waters and seal … All Upper South Island highways are currently open after the recent torrential rain, bar SH63 Renwick to near St Arnaud/ Tophouse. “Given the amount of damage to the road surface from the flood waters and seal repairs needed, we do not anticipate this highway will reopen until Wednesday evening 21 July,” says Tresca Forrester, Journey Manager, Waka Kotahi NZ Transport Agency.