The detour will be via Lake Brunner/Moana for the section of highway closest to Greymouth.
Due to a culvert replacement on State Highway 73, east of Dillmanstown, the highway will be closed between Kumara and Jacksons from 4am Saturday, 5 March, to 10 pm, Sunday, 6 March.
The detour, via Lake Brunner Road from Jacksons to Stillwater/Greymouth, will add an additional 35 minutes to people’s journeys, says Waka Kotahi Journey Manager Tresca Forrester.

Plan ahead for a safe, enjoyable journey. Keep up to date with:
- COVID-19 services update: nzta.govt.nz/COVID19
- Traffic updates: journeys.nzta.govt.nz/traffic
- Facebook: facebook.com/NZTASouthIsland
- Twitter Canterbury/West Coast: twitter.com/WakaKotahiCWC
- Journey planner: journeys.nzta.govt.nz
- Phone: 0800 4 HIGHWAYS (0800 44 44 49)