Northbound closures and detours are required for State Highway 1 travellers near Ngāruawāhia from Sunday night, 13 August to Tuesday night 15 August.
Contractors need to move traffic off the northbound lanes to do survey work for upcoming permanent surfacing works and other maintenance activities.
The work is part of the current Waikato Expressway Ngāruawāhia section remedial and safety improvements.
The detour is via Ngāruawāhia on the old highway between Horotiu and Gordonton Road interchanges, from 7pm to 5am.
It adds about 5-8 mins to travel times.
HPMVs must use SH1B and overweight vehicles need to use SH2/27, under an existing overweight permit.
