The Indicative Route for Warkworth to Wellsford connects to the Pūhoi to Warkworth section to the northwest of Warkworth and heads north, crossing Woodcocks and Kaipara Flats Roads.
The new motorway will be located in a separate valley, to the west of the existing SH1, until it reaches the Hoteo River where it will head eastwards crossing over the existing SH1and Wayby Valley Road, with an interchange proposed at Wayby Valley Road.
The motorway then continues generally parallel to Wayby Valley Road, before turning northwards and crossing Rustybrook Road. As the motorway heads north it will cross local roads including Whangaripo Valley, Farmers Lime and Silver Hill roads, bypassing both Wellsford and Te Hana townships.
A further interchange is proposed near Mangawhai Road, with the motorway then connecting back into the existing SH1 to the north of Vipond Road.