A night-time closure and detour is required to make urgent repairs on State Highway 1 north of Hamilton on Monday, 15 May.
Heavy rain this week has led to potholes developing in the south-bound lanes of the Ngāruawāhia section of the Waikato Expressway where remedial and safety improvements are under way.
The works have reduced several kilometres of SH1 to single lane and the combined pressure of heavy rain and traffic has seen potholes develop.
Contractors need to close the south-bound lane to mill and fill some areas, rather than continue with temporary patching.
The detour is via Ngāruawāhia town on the old highway between Gordonton Road and Horotiu interchanges, from 7pm to 5am. It adds about 5mins to travel times.
HPMVs must use SH1B and over-weight vehicles need to use SH2/27, under an existing Overweight permit.
If weather is unsuitable for asphalting the closure will be transferred to the following night.
Motorists are encouraged to visit the Waka Kotahi Journey Planner website.
