State Highway 1 across the Brynderwyn Hills will remain open over night.

The NZ Transport Agency says safety and maintenance work planned for this evening has been deferred due to weather conditions.

The road was due to be closed in both directions from 7pm tonight until 6am tomorrow.

Rain in the area over the weekend is forecast to continue which means some of the planned surfacing work cannot be carried out. A new date for the work is still to be finalised.